You must be new at this internet thing... So here it is. Go to www.google.com and type in Old Debt. The very first website listed as a result of you search will be an excellent article from Bankrate.com
http://www.bankrate.com/brm/news/cc/20040116a1.asp
Next, from the same www.google.com, type in Statute of Limitations Debt Virginia (unless, of course you are from Alabama, then type in Alabama). The very first response you will get is a web page that lists all 50 states and the statute of limitations.
http://www.bcsalliance.com/y_debt_sol.html
From this website we learn that the statute of limitations in Virginia for debt is three years and 5 years for a written contract.
Warning - do not believe everything you see on the internet though. The public library is also a good place to verify the validity of any information you feel needs verification or explanation.