On your link - be aware of the note at the bottom of the information page as to which SATA controllers it works with.
Aso be aware that by the time you've paid p&p it works out at nearly £19 - and if it doesn't work, hassle with returning it. Better buy locally I would have thought, and ask for a "work or return" agreement.
I know this might sound daft but could I just clarify a point before I go ahead and purchase this. The eide drive that I want to use will be the only harddrive in the system. It will boot okay from this card won't it.