Will it work with 4 gigs of ram

[killer.pollo]

Basically I'm trying to upgrade my computer I have an hp dv6119us it has 2x512mb of DDR2 ram and was wondering if I could upgrade to 2x2GB DDR2 800 even though the hp website says that I can upgrade to 2GB and wanna know if it will work right even though I'm going over the max recommended ram, or that i'm getting DDR2 800.
Also wondering if there is much difference between SATA300 and SATA150 since i'm wondering about buying a 200gb 7200 rpm drive to replace the 80gb 5400rpm drive. Thanks a lot any help would be wonderful. The new hard drive would be SATA 150 for some reason.

running 1.6 GHz AMD Turion™ 64 X2 Dual-Core Mobile Technology TL-50
with windows xp installed and dont ask why but i'm hoping to install windows vista with the upgrade

 

[anothEr]

Yes you can upgrade to 4gigs of ram, but if your still using a x86 operating system, you will only allowed to use 3gigs. You have to get a 64 bit operating system.

The difference of SATA 150 and SATA 300 is the speed and are backward/forward compatible.

 

[PohTayToez]

Yes you can upgrade to 4gigs of ram, but if your still using a x86 operating system, you will only allowed to use 3gigs. You have to get a 64 bit operating system.

The difference of SATA 150 and SATA 300 is the speed and are backward/forward compatible.

First, no he cannot upgrade to 4GB. The laptop's motherboard can only support 2GB.

Second, what makes you assume he's using a 32bit operating system? That laptop can be configured with either.