I have a problem with an Adware called Webhancer, it’s in a folder called System Volume Information?

I deleted it from my computer, and them I removed it from my recycle bin but now it’s in a folder called System volume information in the restore area, I tried using the instructions on the Microsoft website to access it but it didn’t work, so is it still a threat if it’s in the system volume information? Oh I also used the Symantec Webhancer removal tool and it said my system doesn’t have Webhancer but my anti-virus says it’s in the system volume information. Oh and for some strange reason system restore doesn’t work. How do I get rid of Webhancer, is it dangerous if it’s in the system volume information

>>>>Do as Gulfer 2 says 1st <<<<

http://download.cnet.com/SuperAntiSpyware-Free-Edition/3000-8022_4-10523889.html?tag=mncol

Use this tool to make sure it's all completely gone?

Cleanup tool (This tool is not intended for novices)
(Free) http://free.antivirus.com/hijackthis/

Hijack This tutorial http://aumha.org/a/hjttutor.htm

HOW TO FIX CURRUPTED XP SYSTEM FILES
1. Go to Start -> Run -> type sfc /scan now ->hit ok.
It will ask you to insert a Windows XP installation disc.
2. Insert the disc and let the SFC utility run
3. SFC will check/repair changes made to the main system files.

Stay Safe Out There (^.^)