Hey all, I gots me a computer problem and need some advice, so figured I'd check in here.

Long story short, my laptop PC is on it's way to the great scrapheap in the sky both hardware and software wise. It's still functional, but judging from the noises it's making and the way it needs to stop and think about just about everything it does it's only a matter of time before it's gonna die on me. I'm more or less a technophobe and have had the temperamental beast since '07 and it's been through a lot of travel and abuse, so it's done OK, but I'm also off overseas in about two months so figure I should replace it now while I have the time to get to learn my way around a new one and set it up to my liking.
I was also thinking I might go for a Mac this time, if only so it's less likely to fall prey to the myriad viruses etc my PCs always seem to get what with being subjected to an ignorant owner like me. I'll miss the easy gaming buys but otherwise Macs do seem the better option. Since it's a big purchase I'm thinking I might jump on the online overseas ordering trend rather than paying domestic markups.
So, can anyone recommend any good sources and/or bargains for a laptop Mac suitable for a non-computer-minded travelling type? Are there any makes/models/brands I should avoid, or any particular problems associated with said? I'm after something sturdy, portable, and easy-to-use which will be able to function as my music library, play movies, do internet stuff (email, facebook, Ozformers, news sites etc), do basic office stuff (mostly word processing), and which will last someone like me a while. If there's some way of making them compatible with old-school Windows games that's a bonus. Not sure about what the budget will be but likely around $1800-$2500.

Any suggestions/advice are much appreciated.