1) No. Use whatever modeling program you want. You aren't required to use Truespace.
2)don't know. If it creates .x .md2. .3ds or .b3d models then probably yes.
3) don't know, but like I said above, you don't need truespace
2)don't know. If it creates .x .md2. .3ds or .b3d models then probably yes.
3) don't know, but like I said above, you don't need truespace