What is the value of a painted 2000 Lady Liberty silver dollar?

Its value is based on its silver content. The price of silver changes every day so any specific answer posted here would be out of date almost immediately. While it's not normal WikiAnswers policy to say "use the internet", that's the best approach in this case. You can check a site such as kitco.com, CNNMoney, etc. for the latest spot prices of 1 oz of silver.

Note that the $1 denomination shown on these coins is artificial. They're actually bullion pieces sold for their metal value and not for spending.