First you need to have the original trackset installed (but this can be also corrected later, if you had installed modified track, before this, so it is no fatal error). You need also about 330 MB free harddisk space. This utility makes it possible to easily change your trackset between original RUS-KEN-FIN-SWE-CHE and Relay named tracks AUS-GER-CAN-BEL-MON. If you save RTtracks.bat (link below) to your Rally Trophy -folder and run it once, you will get list of needed files in your harddisk. You need to download (and unzip) those files to your harddisk to the given folders. After you have done that, you run the RTtracks.bat again. If all needed files are in the harddisk, the RTtracks, will make copies of the original tracks and install the modified tracks using BZFmanager. You need just press enter then BZFManager has installed track and after that the RTtracks.bat need also pressing eneter, so it can continue to install more tracks. This whole installing sequence will take couple minutes. After that, you have all the modified tracks in your RT. In the next runs of the RTtracks.bat, your trackset will be changed between those two sets in under 1 second.
There is one restriction in that makes some stages harder than they are intended. There seems to be hardcoded car light settings for the original tracks, so if there is e.g. Finland All Tarmac (GER) in place of Kenya, there are lights available only in stage 4, so you will drive in dark in the stages, which the stage editor intended, if there are night stages other than stage 4. Same goes for other rallies too. So, it is possible to have better ordering for these sets. Or not. We need more comments and possibly we need to change track ordering or the track conditions in future.