Reinstallation of ACER + Media Center

[Guest]

Hello,
I lost everything on my Acer 5100 laptop. Someone installed Windows XP Home Edition, but I cannot access the original ACER program and, therefore, Media Center which was already on the computer when purchased. HELP!

 

[buwish]

Were there recovery disks that came with it? If not, there should be a recovery partition that you can access by hitting f5 (or whatever the function key is for acer) as soon as you start the computer.