When you have created your vecs, you will need to test them, I suggest getting hold of a BOT for testing before testing on a live server ... live servers with real players can be used for tweaking those vecs. One of the very best BOTS around is PODBOT ... pick it up from here.

If its cheat sites, the look no further than Joolz or Jahs CS Cheats.

If cheating isn't for you, then please seek out Cannonfodder and his anti-cheat clan.