OK, a couple of things. First, I appreciate everyone's willingness to help. Second, I misspoke (typed?) regarding frees pace on my hard drive. It's 18 gigs, not megs. For those of you who suggested I buy desktop computer, like I said, I'm overseas. I travel a great deal, and right now, I'm in Iraq. A desktop simply isn't an option. They just don't travel well, and I can't take one as carry-on luggage

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Bottom line is, the game played fine for over a month, then just started freezing up on me. I didn't do or change amyhting, so if anyone can give me advice on how to troubleshoot the situation, that'd be great.
I am considering buying another laptop, so futher suggestions along that line would also be appreciated. Thank you, everyone, for your help and suggestions.
Dan