i've seen this problem with TweakUI. If you have this program installed you might have the drives "hidden/". do this<br><br> 1.Click Start, point to Settings, and then click Control Panel. <br><br> 2.Double-click TweakUI. <br><br> 3.Click the My Computer tab, and then click any cleared check boxes to select them. <br><br> 4.Click Apply, and then click Close. <br><br>this should take care of it. Good Luck