external hard drives are hot swappable as they are attached to USB or firewire, and both ports supports hot swapping.
in internal h/d's only S-ATA's are hot swappable.
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"