I don't think your problems have anything to do with the move either. This most recent move ....office relocation.... only moved the servers that have the HT web page, score pages, this message board, and the loggin information. Once you log into the game, your on another totally different server that WASN'T moved. So if your crashing while in the game, your on the same server that you were on for the past few months, that one hasn't changed or moved.
I would do the "re-install" of windows that was suggested above and try for a "repair" before I did a re-formate.... hate reformating
takes all dang day to get it back together, and ya always forget to back something up!
I'd also check the processes you have running (CNTRL, ALT, DELETE), and make sure nothing was snuck in there eating your CPU cycles. Start the game, ALT, TAB out, bring up the processes window. AH should take 99% of your cycles.