You will still have access to any online support documents and driver downloads and stuff.  You wont be able to call or online chat with support or get any help with any issues without paying fees.

I really appreciate your reply and information.  Thanks!

Hello! You can extend the warranty for maximum upto 5 years. You you had an initial 1 year and 1 year extended, then you can get it extended for 3 more years.

If you are in the US then you can check your warranty staus at:

http://support.dell.com/support/topics/global.aspx/support/warranty/warranty_information?c=us&cs=19&l=en&s=dfh&redirect=1

Thanks,

Singh

Singh, thank you very much for your information regarding extending the warranty on our Dell desktop.  It is much appreciated.