So I plan on upgrading to Leopard, but in the meantime I want to put a full version of Windows on my MacBook. I have looked around online and found the "system builder" versions of Windows XP (not really interested in Vista). The license says you can only install it on one machine...so does this mean if I install on my MacBook today with Bootcamp/Tiger, then do a reinstall after I put Leopard on my MacBook, I will get errors/etc from Windows? Also, is Newegg/Amazon the cheapest alternative for a full, legal copy of Windows? Thanks.