I'm looking to buy an E520 at £449 but have one or two concerns about whether I would be able to add an extra HDD (internally!). The online email contacts wont give me an answer, saying phone their 0870 number, but I don't want the sales pitch! Also how many USB sockets are there and are they back or front? I see there are two PCI slots, which will cope with my modem and a firewire . If anyone has this model I would be grateful for any help/advice. Unfortunately I seem to have missed the 250Gb HDD and cordless keybd/mouse, which was on offer a couple of days ago!