D/L a program called CMagic. Open gp4 track with Cmagic-click edit gp4 info button-this is where u can enter values such as track name, country, splits, laps and prefix.
eg: 2010 Sepang in slot 3
prefix Sepang2001
name Petronas Malaysian GP
country Malaysia
adjective Malaysian
laps 56
split1 290
split2 670
with this info added to the track you can now switch trackorder in gpxpatch to whatever order you want as well as having all the correct info in the menus of gp4. There is a tutorial at grandprixgames which can help you as well. Hope that helped.
Glenn(Cdn)