Bootcamp X Windows Key such as ALT + Print Screen

I am considering buying a Mac to have a 2 in 1 experience with Leopard and WinXP. Simples question:

"Will the keyboard allow me to have the same experience?"

I checked this website here: http://docs.info.apple.com/article.html?artnum=304270

And it looks like some important keys are missing. Is there a workaround for this or is it a drawback of the bootcamp experience?

Thanks very much!