OK guys, you were newbees once and the info isn't that obvious to find, especially if you don't know it exists.
lookup windows.txt in the doc directory of mame and look at the following options:
-skip_disclaimer
-skip_gameinfo
By the way, the emuSaver page refers to a "nodisclaimer" option that AFAIK doesn't exist.
I do have a question though: when I run galaga I get a screen that tells me that video emulation is not 100% accurate and to press OK. The options above don't seem to have any effect on that screen. Isn't his an issue for emuSAver?