I am running VMware Workstation 7.1 on a 64 bit Windows 7 host with plenty of RAM. The guest is a 32 bit Windows XP. I installed VMware tools when the VM was first created, but not since. I like to take screenshots by dragging down the "VM" menu and selecting "Capture Screen". It used to give me a little message about how I could set up my preferences in the VMware Edit Preferences form, but eventually I said "Don't remind me about this again." That's when the trouble started. As long as VMware was reminding me about preferences, it was taking screenshots and saving them in the clipboard just fine. Since then, it the screenshot gets saved about 25% of the time. I can go the preferences and redirect the screenshot to the host's desktop, but I want to use the image in the guest. (The various combinations of the PrtScn key do not work for reasons having nothing to do with the machine's being virtual.)
I would really like nothing more than to get back that troublesome little box reminding me I can set up my preferences in VMware, but I'm open to other ideas if you have them.