Genuine Microsoft?

I bought my computer from a computer fair and it had XP installed but after a few months of using it with no problem I started getting a "ballon" message saying my software wasn't geniune and i should "click" on the ballon to purchase a new one. I have tried to contact the seller but have been unsucceful. My problem now is I have stopped received updates from Microsoft and can't even use Windows Media player. It will cost me like $300 to purchase the geniune version and I can't afford it at all!!! What are my options and is there a cheaper or free way to get the genuine version?

Thank you

Genuine Microsoft?antivirus software

you got snookered by a windows pirate.You can buy windows xp home for about $199...good luck

Genuine Microsoft?computer virus

If you have a 'brand' name pc, you can get a replacement cd cheap, like $10

Here's a sample:

http://auctions.yahoo.com/auction/232289...

or

http://auctions.yahoo.com/auction/233879...
If you know the name of the scum-bag that sold you the computer with the pirated Windows , and you rat him out to Microsoft. Microsoft will give your a huge discount on a genuine Windows license. Contact them.

Good luck.
You probably bought a stolen computer. I once did it too. We learn as we go. Microsoft operating systems are licensed to one computer. Sorry. I can't help you.
Microsoft Windows XP Media Center Edition 2005 SP2b - OEM $109.00