i'm not sure what 700 quid works out to in Canadian or American dollars, but it sure doesn't sound like enough, especially if you need a monitor.
please list the parts you will need...case?, dvd-rw?, floppy?
look to the thread called "Cost for Conroe?" on the first page to give you an idea of what you will be looking at. i know i spent just over $1000 on a cpu/mobo/ram/psu. that included all shipping and taxes, in Canadian funds. i am reusing my case, dvd-rw/dvd drives, floppy. i bought a slightly used x800pro pcie for like $90 from the classifieds here, and a couple of weeks ago i spent $115 on a 320gb seagate HD.
you can do it cheaper than i did, but it is a trade off. you get what you pay for really. i would say, do not skimp on ram/psu. mobo, there are a few choices that oc decently. i went with the p5b-dlx, but the gigabyte ds3 is about $100 cheaper (but some people have had NO luck with it). also, figure about $50 for a good aircooler, i went with the Scythe Ninja Plus, comes with a wimpy fan, but i've got a 125cfm 120mm fan i plan on using for benching runs.
still awaiting my parts, so i cannot give you first hand results yet.
