Mine is also out for delivery, but it's going to my mom-in-law's so I can't get to it till after work <sigh>.
Then I''ll boot her up, check her out and then check that I have the CDs needed to reinstall everything I want (OS - I paid for the disk, drivers and a few of the utilities).
Then, I'll FDisk that bad boy into two partitions - 20GB for OS and Applications and 40GB for data and reinstall the stuff I want; OS, Drivers, MusicMatch, Earthlink. I'll get all the updates done using my M-i-L's cable modem and then install Civilization IV, Microsoft Money and Visual Basic, together with any updates for them.
Should take me a few hours, but I'll have a nice clean machine.