I found this post while looking for a solution myself at another site. So thought I would post it here as well which might be useful for others sometime.
How to delete a Service in Windows XP
Click Start | Run and type regedit in the Open: line. Click OK.
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
Scroll down the left pane, locate the service name, right click it and select Delete.
Reboot the system