With PC, alt-something opens the something in the main menu. Does Mac have similar function? For example, is there a way to open View menu as if I click it?
Try CtrlF2 - that should highlight the Apple-symbol on the main menubar.
edit: The cursor keys and Enter then allow you to navigate, drill-down and ultimately select an item - just as you can on Windows.
also - can't claim credit for this, I learnt it here on the site! http://apple.stackexchange.com/questions/183/mac-os-x-keyboard-shortcuts/185#185