Need help upgrading laptop

[evilmonkeyspanker]

I have a HP dv9720us


I am going to upgrade to 4gb and plan to buy two matching sticks of 2gb.  What is the best ram for this system

I want to upgrade the video card... is this possible.  It has an on-board nVidia 7150.   

Where is the cheapest place to buy laptop batteries?

thanks for any help you can give me.

EMS

[patio]

1) Travel to Crucial.com to see what type and how much RAM the machine takes...use the online scanner.

2) Most laptops video cannot be upgraded...

3)Probably the Web...search the serial/model #'s.