djepiphany22,
Markxx may be inaccurate. This person could be thinking of a different operating system or type of computer.
If you have windows xp, first, click start (lower left corner), then click "My Computer" in the right column (click just once). This opens up your computer so that you can see individual files and folders.
Then you can find virtuagirlhd here: C:Documents and Settings'user name'Application Datavghd. The individual girls (not the outfits or animations) are here: C:Documents and Settings'user name'Application DatavghdModels. Clicking on any folder in the Models folder will bring you to all files for that girl.
NOTE: replace 'user name' with your actual user name on your computer. For instance, if your user name is djepiphany22, then the place you find your girls is this: C:Documents and Settingsdjepiphany22Application Datavghd. Just an example.