Wondering about upgrade ? Is it worth it ?

Okay, first of all I would just like to say thank heavens for forums such as Notebook Review, I have just spent a bit of time searching and what not, and was truly astounded at the amount of knowledge freely shared about.
Now I got a bi of an old clunker, but I don't really need that much in terms of raw power, but I would like to increase my frame-rates if at all possible.
Acer TravelMate 7720, I know its old, all I was hoping was too update the RAM to 4GB, and maybe upgrade the integrated graphics.
I have no idea how laptop/notebook Graphics upgrades work, I have messed around with desktops, and I am not scared to take it apart, Im very good with my hands etc etc bla bla bla.
So is there actual cards that you install, or is it just replacing a chip ? Ive searched for this and I really cant find any definitive answers, when I search it always brings up threads relate to drivers ?
I would also consider upgrading the main CPU processor if the price was right ?
So am I dreaming here, or is this actually possible still ?
Thanks for any and all help offered.

 

Its not worth the hassle trying to upgrade the GPU unless you know it can be in the first place... If it's running integrated graphics then I don't even think you can add in a card, laptops don't work like desktops where you get 7 slots for expandability. they're all custom cards and are a bit tricky to get working... But that's usually reserved for bigger notebooks... (I don't know much about acers)

The CPU can be upgraded in most cases, its just finding out which chipset you're on and finding what else will work on it, assuming your bios supports it.

The RAM would be the easiest thing to upgrade, although ddr2 ram is a bit expensive now.

If you're looking at upgrading all of that though, you might be better off just finding a new laptop altogether.