Congrats on finally getting your sig. :D
In my opinion one of the MOST important downloads, in terms of drivers, is the Intel wireless driver update. Get this from the Intel site.
It's the 188.8.131.52 driver with the v10 software (the top most download). This driver really adds some stability to the wireless card. It's the same download for the 2915 ABG or the 2200 BG card.