A real estate agent on this site Frank Biggans introduced me to this site.

http://www.foreclosurelistings.com - You might want to check this site out for foreclosured homes in Virginia

First spell foreclosed correctly, and secondly, my site will let you search for keywords on the MLS such as Foreclosure and Foreclosed.

I use: http://www.virginia-foreclosure.net/

Tax foreclosures are generally found through the courthouse records and the newspapers. If you are thinking to buy properties at auction for the back taxes you need to check carefully about the reclaim period for the homeowner. With tax liens you are competing against companies who buy them in bulk so proceed with caution.