Applications disabled?

When I start up my PC, it always says.DEVICES OR APPLICATIONS DISABLED click here, when I click to have a look it says the following..Applications or devices on this PC use drivers that will cause windows to become unstable, windows has prevented these drivers from loading....it was a cd recording software, manafacturer was ROXIO Inc...Adaptec cd r4-2k.sys...cd ralw2k.sys, I cannot delete this program cos I cant find it anywhere, I can record a music cd, but in the 5years ive had my pc ive never made a video.I have windows xp.many thanx