When I press Alt-Print Screen I get a screenshot of the entire VM+window frame taken in my host-OS. What I want is a screenshot of the selected application running in the VM.
My host OS is win7-64 enterprise. The VM is running XP Pro.
When the keyboard is captured by guest, Alt+PrintScreen should capture the guest's screen contents, not the host's. If you have VM Additions installed to the guest, you may need to move the mouse cursor inside guest's screen.
Also make sure you're pressing the left Alt, because AltGr (RightAlt) is usually reserved by VirtualPC as the "escape to host" key.
If all else fails, cutting off the unneeded part in Paint or Photoshop is not that hard anyway.
just goto edit menu and select all, at same menu click on copy and past in paint. that's it.