I do a bit of Computer hunting for people on a budget, I would recommend Dell too for not necessarily the cheapest deal but good alround package and you do get good support if things go wrong ie Hardware.
I've just bought a Dell inspiron 17 and installed windows 7 on it recently, one of the reasons I bought a 17 inch was a full sized keyboard including number pad.
I am well pleased with it so far but I can see where dell have started to save money on less quality, so far it has been faultless.
I have been down the road of spending big money on PC's so I would say to keep the budget to below £500 unless you have need for a powerful computer for Gaming or advanced film, photgraphy or design use as laptops seem to be more and more disposable as technology races on.
So unless you need a 17 inch screen for DVD watching as I Do go for a 15 Inch widescreen with quality (resolution) to suit your budget.
Video card is fine with the stock item, pick an upgrade if you want to game but you will really need to upgrade the other bits and the price will rocket.
If it's running Windows 7 then 3GB (3000 MB) or more RAM is plenty.
Hardrive space is up to you but more than 160GB will be Huge for light use.
Processor is up to you again, a Dual core pentium is the most likely choice although if you are a light user a single core celeron will do, I went for a dual core pentium only because the upgrade was to cheap to resist.
Dual core doesn't mean twice as fast but your PC will find it easier to multi task and therefore save you some time.
Most laptops come with wireless built in for internet access through your broadband router. Stick with the standard offering.
Warranty I would go for a the cheapest package available, if you do find you want a warranty ring Dell after purchase for a sometimes considerably cheaper deal.
I wouldn't buy software from Dell directly and you can priotect yourself for free with programs like AVG, spybot, spywareblaster and Malwarebytes.
Blu ray, webcams, battery upgrade are all down to your budget really.
Office software can be bought cheaper if you shop around and also free from Open Office.
and the other thing is timing. If you can wait until after christmas when the shelves are full of unsold stock you will most likely get a lot more for your money.
And have a go at ringing a sale sperson for a bit of a haggle like free delivery if it's not offered or add a webcam.
I would stay away form the netbooks and mini as what you save in space you will lose in performance and tiny keyboard.
heres a couple:
on the left £449 top end for the budget buy as stock, this will be plenty for a light user.
http://www1.euro.dell.com/uk/en/hom...aspx?refid=laptop-inspiron-17&s=dhs&cs=ukdhs1
and a 15 inch £349
http://www1.euro.dell.com/uk/en/hom...laptop-inspiron-1545&s=dhs&cs=ukdhs1&ref=lthp
something else I would highly recommend is a USB powered external Hardrive such as the one below, keep all the things you really dont want to lose on it and then the worry of a virus or Hardware fault will be less painful when it happnens.........its as easy as drag and drop and nice and portable.
http://www.amazon.co.uk/Western-Dig...3?ie=UTF8&s=electronics&qid=1260217427&sr=8-3
Delivery from Dell is pretty painless too, they will ring you with a delivery date and will deliver after 6pm and took me about 6 working days to recieve a non standard package.
lastly download the service manual from Dell website, something I am finding is the Fans and heatsinks get blocked pretty quickly(very easy to do yourself) so being able to clear these out once in a while will keep your laptop happy and quiet.
HTH