PC Crash , flockxp.sys

hey PPl, i got Xp Pro , and a coupla days ago i was playing around with services, so now when i start win my pc restarts, i already had this probelm before but it was about my firewall so i solved it , it was some problem with drivers. i also restored all settings to before when i was messing around with services , so anyways it jsut restarts i tryed chaning settings to show me error msg is says , that i i have any antivirus, or backing up ,crap i gotta uninstall it, and then shows some numbers and says something about flockxp.sys, if anyone can help plz leave a msg or email me "vitalik789@hotmail."com" P.S i added " before com coz it wouldnt allow me to post url's

oh i forgot to add that if i start windows in "Last Good Known Configuration"
"When you choose Last Known Good Configuration, only the information in registry key HKLM\System\CurrentControlSet is restored. Any changes you have made in other registry keys remain." it works perfectly.