i can't help you with debian cause i'm using gentoo linux.
the nvidia driver can be downloaded from:
the GeForce Go 7300 with pci device id 0x01D7 is supported by this driver.
(check with lspci if your card has a device id of 0x01D7)
further, it's a good idea to RTFM
it also has some advantages to use prebuilt packages for debian instead of the
generic installer. but i can't help you with that topic. you should ask in some debian mailinglist.