In reply to sweenyt:
They will be perfectly adequate. as others said above, the 105 version will last a bit better (but the other's won't fall apart for many 1000s of miles).
You will of course need shoes to go with them, and it's important to get the fit right, so try on plenty of different makes to see which one's sizing suits you best.
If you haven't used clipless pedals before, then you will be amazed at the performance and control difference once you get over the frustrating first couple of rides getting used to them.
Practise as much as you can getting them in or out whilst holding on to a door way or something before you first go out.
At some point, you will stop without remembering to unclip, and topple sideways. This will hurt (your pride & physically). After not too long, it becomes automatic to unclip, and I can say in all the accidents I've had on road and off, I have never once found myself still stuck to the bike. It does take a bit of perseverance.
On your first ride out, be concious of the pedals, especially at junctions when stopping, but also when starting off - give yourself much more room to pull away if crossing traffic as you will find it hard to push the pedals if you can't get the clips in straight away.
Hope this helps