accidentally

(ingles-español)I´m using windows xp home edition version 5.1 and I must have deleted some important files, I don´t even know the number or names of them, but now some programs like Outlook are not working, neither I can install ...

My Norton System Works recently detected W32,Swen,A@mm by Virus Scanner & Auto-Protect. It automatically quarantined the following files and placed them in "Backup Items" after deletion from my computer: akgwl.exe akgwlzj.exe ...