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Drummer is correct, BTB Evo is almost identical to BTB Pro, but whilst BTB Pro can export to rFactor, RBR and Racer, BTB Evo can export to the SIMBIN titles GT Legends, GTR 2 or the Race 07 Series (Race 07, GTR Evolution, Race On, Race Injection, etc.). I own Pro, not Evo, but I do know that it is impossible to run the tracks you make in Race 07 unless you own one of the older games (GTL or GTR2). This is because these older games used to automatically generate the .HAT (Height Above Terrain, I think) file which all tracks need to run. However, Race 07 does not automatically generate .HAT files. The only way around this is to first export the track to GTL or GTR2, run the track at least once (to generate the .HAT file), find and copy the track's .HAT file and paste it into the folder for .HAT files in Race 07. Then, you can export the track to Race 07 and drive your track.
If you don't own GTL or GTR2 already, you should by one of them because they're both games (at least GTL is, I don't own GTR2 but I know that plenty of people still play it), and as an added bonus (if you own rFactor), owning GTL allows you to use the excellent Historic GT and Touring Car mod, which is easily one of the best and most complete mods out there. Both GTL and GTR2, can be bought relatively cheaply. A digital copy of GTL can be purchased from RaceRoom.net
here for 9.99€, and hardcopies of both games can be bought from eBay, although make sure that you buy from a trusted seller with lots of good reviews should you choose that path. From memory,
this was the seller that I bought my copy of GTL from, though I'm not 100% certain as it was almost a year ago. Also, I don't think this applies to GTR2, but if you choose the GTL disk version and you own Windows Vista or 7, you will need to crack it because the license system doesn't work and won't allow you to play the game on Vista or 7. This is unfortunate as obviously no-one wants to support cracking, but this will be the only choice.
I think that's about it
Just realised I wrote a massive wall o' text
Cheers,
FerrariMan96
EDIT: Doh! Forgot something: If you have a legitimate hardcopy of GTL, you can get the downloadable version for free if you prove to RaceRoom that your copy is legitimate. From memory, you needed to send them a photo with the disk, license key and a handwritten note stating the date and time, or something like that. Will try to find the link because this essentially gets you both copies as it's always nice to have a hardcopy as backup
EDIT 2: Here's the link to that article:
http://www.raceroom.net/specials/gt-legends-revival/