I found this in a few different places around the 'net - hopefully it's helpful:
Use the Windows Classic Look
Are you more comfortable performing a task with the familiar Windows Classic user interface than you are with Windows XP's new interface? You can quickly switch the user interface to the familiar Windows Classic appearance on your computer if it helps you remember a task in your operating system or program. Then, you can go back to the original Windows look with a couple of clicks.
- Right-click on a blank area of the desktop, then click Properties.
- Click the Appearance tab.
- On the Windows and Buttons menu, select Windows Classic, then Click OK.