First things first: you'll need a hard drive.
The 2488 ships with an Seagate ST340014A Barracuda 7200.2 40gig hard drive. The Barracuda 7200 series drives are 7200 rpm, 8.5 ms seek Ultra ATA/100 drives which Seagate represents as having "Superior performance, quiet operation and outstanding reliability." They also have a three year warranty.
It seems that the 2488 will only support four partitions, with a max partition size of size of 32gig. Given this I suggest any of the following drives: