Need major advice - Urgently - Please Reply

So its christhmas i open my laptop I got the Acer aspire 5672 BUT i orderd the 2Gig DDR2 Version with 120gig HD as in my signature but it turns out its the 5672 1gig ddr2 and 80gig hd with no webcam.

Now comet.co.uk were i got it from only list the lower version (80 gig hd 1gig mem with no webcam) at 600 i orderd my 5672 at back end of nov for 800.

Mum is taking me back tommorow to sort it out, They have a Acer ferrari at 800 which is in this link:

http://www.comet.co.uk/cometbrowse/product.do?sku=315036

But its single core cpu so it wouldnt be as good or last aslong correct?

Their is also this the Aspire 5634 but its GFX are 7300 and i wanted atleast X1400 which ive tested today on the laptop anyway and it performs well but i cant see the GeForce 7300 doing aswell?

The link for that is this:

http://www.comet.co.uk/cometbrowse/product.do?sku=363294

Can anybody offer any advice as i am at a loss of what to do? Would like it replaced i am enjoying this version too (thou does get quite warm) id need if being replaced one from comet, As they wouldnt give a full refund/take laptop back to go else were.

 

I will tell you, myself, I have yet to find any need for dual core.
There is 2 main settins I use, 800MHz, and 2Ghz, I've used 2GHz once, to try a game, thats it.

 

I understand their isnt much need for it now but their will be soon allong with 2Gig Memoray, I think if they cant get the correct one in or isnt any that match we will try ask for a refund and ill go else were possibley build a Dell with the same specs.

 

Went for a HP Pavilion dv6000 - delete thread if wanted/needed to.