Stephen073190

Alright, I'm going off to college and I figured it's time to call on you guys again.
This time I need a new laptop but I have a few constraints:
1)First of all I want this laptop to be able to handle any high memory applications like stock trading platforms, but I would like to be able to run a few of the not as new games at full or near full specs (oblivion, battlefield 2, tf2, bioshock).
2) I want a 512mb video card in it and a dual core processor somewhere between 2-2.5ghz processor. I was thinkin' hp, but I'm really not that sure.
3) I need to spend around (but mostly under) $1300.
4)Since I'm also looking at using this for my desktop (by plugging it into my 19 inch monitor when I'm home) I would prefer that the screen is 15.4.
5)if anyone knows if those hp pavilion performance machines like the dv6700t are upgradeable for better video cards (512MB) that would help

I'm open to any and all suggestions, thanks guys and please send the link with the machine you are referring to.