Answers:
1. Take your pick look around the forums. ( I will say
http://bvlist.com/sourcecode/phpmy-bittorrent as im using myself and find nice tracker to use and play with)
2. I believe there is no support on tstrike fullmodded editions. Use a clean one and modify yourself.
3. Nobody is interested in your tracker.
4. Again look around forums, jeese.
Just find a nice clean tracker to use man, themes come with each. here
http://bvlist.com theres plenty. :bubble:
Regards
Daffy 'ChiLLin'