Looking for a PSU

Hello,

Am from the UK. A friend has given me his old motherboard it supports Intel Core2 Extreme,Quad,Dual Core,Pentium,ect

He also gave me a 2gb DDR3 RAM stick. So I bought a pretty nice desktop case with a window and some blue lights inside. All I need now is a PSU I have everything else hard drive, windows, cables. I also bought a Pentium 4 630 CPU for £5 (for now going to get a Core2 Extreme soon).

So I need a PSU. I have only ever built one PC before. So this will be my second. Am not really up to speed with PSU's. I know a lot of people say only get PSU's that cost over £60 and from a good brand. But at the moment I can't afford to. But once I get some money I will look at getting a decent one.

Anyhow I found this one http://www.shop.bt.com/products/best-value-alpine-750w-psu-120mm-red-fan-78ZT.html I have not found many reviews of this but I did manage to find some. All but one said it is a fantastic PSU. So would this PSU be good enough to run the following.

Motherboard (not sure what one just yet)
2gb DDR3 RAM.
DVD drive
2 Hard drives 1x Sata 1x IDE
ATI 5450 1gb Graphics Card,
Intel Pentium 4 630 SL7Z9 3GHz CPU (Will be a Core2 Extreme in a few months)
2x 120cm fans.
Internal Card Reader.

Once I get my Core2 Extreme I will probably play some games at mid settings like Fallout 3, New Vegas, Portal 1 & 2 ect. I also will add a extra 2gb stick of ram at some point.

So anyone think this PSU will be ok?