Restored from SnapShot, tried to create a new site and get the error: "You appear to have alrea reinstall clear your old database tables first.

I am scared to do that... because this is the first time for me to try and restore from Snapshot. I have read and tried some little things (one posting said all they did was create a new website not using the default template, etc). Haven't made any .config changes or anything.

Any ideas?