A good site with info in plain english on everything you need to know about PC's/upgrading/hardware/software/etc./etc. is
http://www.service911.com they even have online video tutorials.
A great place for cheap priced computer bits is
www.scan.co.uk they also are very helpful with info. Check out their 'todays offers only' for some awesome prices on all sorts of stuff.
Speechless Two, I also had a nightmare experience with Dabs Direct, ordered a modem off them with next day delivery, after four days and endless promises I cancelled the order and went to
www.simply.co.uk who couldn't have been more helpful and efficient. Then got credit card statement to find out Dabs had billed me TWICE for the modem they hadn't supplied, took about a month of stroppy emails to customer services and a threat of legal action before they refunded the charges, without an apology, I'd advise anyone out there to avoid Dabs at all costs, and they still have the cheek to keep sending catalogues even after four requests to stop.