On start up on windows XP I keep getting a box saying "you have an unregistered SVKP file" Can anyone help with this?

SVKP is a copy protection system

http://www.anticracking.sk/products_svkp.html

ALSO there is a trojan that inserts itself into the registry as a SVKP.sys file and tries to run at start up. so if you havnt installed a "cracked" program then I would suggest you run a good trojan detector.