Running 2k; I can't resume the desktop from standby. Hibernate does work ok. According to M$ the difference between Hibernate and Standby is:

" Hibernate saves an image of your desktop with all open files and documents, and then it powers down your computer. When you turn on power, your files and documents are open on your desktop exactly as you left them. Standby reduces the power consumption of your computer by cutting power to hardware components you are not using. Standby can cut power to peripheral devices, your monitor, even your hard drive, but maintains power to your computer’s memory so you don’t lose your work."

When I hit the power button in the standby mode the box powers up, but the video card doesn't, or at least the monitor doesn't get the signal.

Any ideas?

Check your bios setting for video power down ./there are a couple of choices ,but you should check your video card support option. Bios will have 'Blank+V-sync/ blank etc.