Right-click on the folder in Source Control Explorer. Choose Get Specific Version. Choose the version that you want to get (by changeset, date, label, etc).
EDIT: At this point your local version will be the version that you want. Check out the changed files and then check them back in. This will bring up the merge wizard and it will probably be complaining about how the server has a newer version than you do. Go through the wizard and merge the files the way you want them (one of the options is to discard the server changes, which is what it sounds like you want). At the end of this process, it may tell you that no files were checked in due to the merge process (or something of that nature), just hit OK and then check in again. This should accomplish what you need.