agree with ethel and Velvetee - for a surfer - �700 is over the top. but set a budget 400 - 550 is probably closer
if the extra money is burning a hole .... get a memory upgrade (2Gb is good) and if storing pikkies is a factor get the biggest external HDD you can find
agree with fo3 about sony .... but not about the mac - too niche and just as (if not more) expensive to run as a sony (in my opinion) - windows rules ... love it or hate it ... 99% of the kit out there is built for window .... and might work on a mac...
acer have been getting good reviews
http://www.pcpro.co.uk/archiveproductsearch/9/ Laptops
http://www.pcpro.co.uk/reviews/alist/
I'd recomend reading the reviews get a shortlist - a trip to pc world ,,, have a touchy feely session .... find one that feels right and then a google session to find a good price