Tried your tip Vader but this is what I got!
Starting log
GPxPatch version: 3.91
GPx version detected: decrypted GP3 v1.13
Verbosity level is 0
OS version info: Windows XP Service Pack 1 build 2600
Total physical memory: 253 MB (free: 128 MB)
Debugging gp3.exe
Waiting for debug events...
Injecting DLL loading code...
Injection succesful
First chance exception
Exception address: 0x00505cea
Exception code: EXCEPTION_ACCESS_VIOLATION
Process tried to read from virtual address 0x00157000
Unhandled exception
Exception address: 0x00505cea
Exception code: EXCEPTION_ACCESS_VIOLATION
Process tried to read from virtual address 0x00157000
Stack trace:
00505CEA: Program Files\Microprose\Grand Prix 3\GPxPatch.exe! <no symbol>
BE606800: <no module><no symbol>
Registers:
EAX=000009E8 ECX=00000082 ESI=00157000
EBX=00000000 EDX=7FFE0304 EDI=00C495EE
CS:EIP=001B:00505CEA
SS:ESP=0023:0012FAD4 EBP=77E9B493
DS=0023 ES=0023 FS=0038 GS=0000
Flags=00000216
Stack dump:
0012fad4: 00505ccf 00505a01 00c49b58 00c49b6b '.\P..ZP.X...k...'
0012fae4: 77e9b493 0012fafc 00000000 7ffe0304 '...w............'
0012faf4: 0012faec 00000001 00505599 77e9b493 '.........UP....w'
0012fb04: 00000000 00141ee7 0051e5a9 01010054 '..........Q.T...'
0012fb14: 7ffdf000 0000000a 0051e440 00400000 '........@.Q...@.'
0012fb24: 00141ee7 0000000a 00000000 0012ffc0 '................'
0012fb34: 7ffdf000 e7ffffff 02020e7c 02100210 '........|.......'
0012fb44: 00000000 00000002 02020e99 0012fc30 '............0...'
0012fb54: 00000002 0012fc2c 02020e7c 0012fc0c '....,...|.......'
0012fb64: 77e7d98d 00142950 0e000001 0012fc30 '...wP)......0...'
0012fb74: 00000002 0012fc2c 00000002 00000000 '....,...........'
0012fb84: 0012fc2c 00000002 00000000 01432800 ',............(C.'
0012fb94: 00000000 03010301 77f95769 01432408 '........iW.w.$C.'
0012fba4: 00144f28 0012fc30 03020302 0052ccc0 '
O..0.........R.'
0012fbb4: 03020302 77f95769 00000000 00144ef0 '....iW.w.....N..'
0012fbc4: 00000000 77f83b47 00145118 00000000 '....G;.w.Q......'
0012fbd4: feeefeee 00000000 00144ee8 00142950 '.........N..P)..'
0012fbe4: 00d21840 77fa3ed0 0012fc4c 77e795cb '@....>.wL......w'
0012fbf4: 00d21898 0012fc6c 00000040 00d21844 '....l...@...D...'
0012fc04: 0012fc18 00000040 0000000c 00000000 '....@...........'
0012fc14: 00000000 004d0047 00200054 00740053 '....G.M.T. .S.t.'
0012fc24: 006e0061 00610064 00640072 00540020 'a.n.d.a.r.d. .T.'
0012fc34: 00d218ba 00c6a8ed 00000011 0012fc70 '............p...'
0012fc44: 77e7304c 00142850 00000220 00d218ba 'L0.wP(.. .......'
0012fc54: 00c6a8ed 00000011 7ffb003f 0012fcdc '........?.......'
0012fc64: 0012fcdc 00142850 00d21898 0012fca4 '....P(..........'
0012fc74: 77e72ffa 00142850 00d21898 00d218bc './.wP(..........'
0012fc84: 00c6a8dc 00c6a91b 7ffb003f 0012fcdc '........?.......'
0012fc94: 00000220 77e7a89c 00000000 00000220 ' ......w.... ...'
0012fca4: 0012fce0 00529a81 00000000 00000220 '......R..... ...'
0012fcb4: 00d21898 00000200 00c6a8dc 0000003f '............?...'
0012fcc4: 00000000 0012fcdc 00000004 0000005e '............^...'
0012fcd4: 00526f00 014323d0 0012fd1c 00529960 '.oR..#C.....`.R.'
0012fce4: 0000000b 0052796d 00000000 0052f00c '....myR.......R.'
0012fcf4: 00cde1f0 00540020 006d0069 0000000f '.... .T.i.m.....'
0012fd04: 00000000 00000003 00000069 00000000 '........i.......'
0012fd14: 0000005e 00000000 0012fe0c 00522f64 '^...........d/R.'
0012fd24: 4252b386 00000004 00000005 0000000f '..RB............'
0012fd34: 00000031 0000001a 00000001 00000000 '1...............'
0012fd44: 004d0047 00200054 00740053 006e0061 'G.M.T. .S.t.a.n.'
0012fd54: 00610064 00640072 00540020 006d0069 'd.a.r.d. .T.i.m.'
0012fd64: 00000065 00000000 00000000 00000000 'e...............'
0012fd74: 00000000 00000000 00000000 00000000 '................'
0012fd84: 000a0000 00050000 00000002 00000000 '................'
0012fd94: 00000000 004d0047 00200054 00610044 '....G.M.T. .D.a.'
0012fda4: 006c0079 00670069 00740068 00540020 'y.l.i.g.h.t. .T.'
0012fdb4: 006d0069 00000065 00000000 00000000 'i.m.e...........'
0012fdc4: 00000000 00000000 00000000 00000000 '................'
0012fdd4: 00000000 00030000 00050000 00000001 '................'
0012fde4: 00000000 ffffffc4 000407d5 00050002 '................'
0012fdf4: 0031000e 005248c5 00000006 00000000 '..1..HR.........'
0012fe04: 0052f00c 00522e6c 0051cce8 4252a576 '..R.l.R...Q.v.RB'
0012fe14: 00000000 00000000 00000080 00000080 '................'
0012fe24: 01432f20 77f82c59 01432fa8 77f51c24 ' /C.Y,.w./C.$..w'
0012fe34: 00000008 01432f28 01430000 0012fe58 '....(/C...C.X...'
0012fe44: 01432f20 77f9cf55 01432f20 01432f28 ' /C.U..w /C.(/C.'
0012fe54: 01430000 00000001 77f9e73e 77f9e7a9 '..C.....>..w...w'
0012fe64: 01430608 77f9e792 00000000 0052f014 '..C....w......R.'
0012fe74: 01430000 d4502f9d 3157fab0 01432f20 '..C../P...W1 /C.'
0012fe84: 01432f20 00000080 01430000 01430000 ' /C.......C...C.'
0012fe94: 0012fe6c 0012fef8 0012fefc 77fa88f0 'l..............w'
0012fea4: 77f53ed8 ffffffff 77f9e792 77f8333b '.>.w.......w;3.w'
0012feb4: 01430000 50000061 01432f28 7ffdf000 '..C.a..P(/C.....'
0012fec4: 00523f7a 77f59baa 77f59bb3 00000000 'z?R....w...w....'
Try and understand that!