Recently became an owner of a Studio 1737 with the ATI Mobility 3650 option. To cut a long story short, without opening it up (something I'm willing to do, but unsure on it's warrenty), Is the GPU upgradable?

Because despite spending £1000 on it, I'm simply disappointed with it's graphical ability. No I wasn't expecting a full-on gaming machine, but I expected it to at least be a little more capable than it is:emotion-6:

After a while of research, I'm reading various scraps of info about it being a seperately-soldered GPU directly onto the mainboard, making it impossible for me to touch.

Is this true, or is it a replacable card?

Many thanks.