i have a 7700 notebook and i also had problems with the card reader.
first of all - the installation. if you have enabled the reader in the bios then you should see a green symbol of an sd-card next to the "hdd-usage"-icon below your laptop's tft.
for this card reader you don't need any special drivers. they are already implemented in windows, at least in xpsp2.
if your card reader is working and correctly installed you should see in "my computer" 4 removable drives. one of them for each cardreader slot.
if you insert the sd card, the cardreader led (below the tft) should flicker to signalize data flow. then the windows "device inserted" box should open. if not, you might have deactiveted autorun. go to "my computer" and try to open all the 4 removable drives. the sd-slot should be the third drive i think (g: or h: or so)
if it doesn't work, go to the control panel, administration, computer administration (i don't know whats the correct name in english windows). select storage and then storage administration (or drive administration or whatever it is called). now you should see a list of installed drives (hdd, changeable and cd-drive) on the right side of the window. in the top list you see all drives with media inserted. there you should see all your hdds and the sd-card.