HP inkjets use hpijs and hplips. If you are installing SuSE 10, then the versions in the SuSE packages should work fine. For SuSE 9.3, you may need to download and compile a newer version.
However you may be having a USB problem rather than a printer problem. Look in /var/log/messages to see what happened.
The output of dmesg and /var/log/boot.msg may also be important.
The program "lsmod" will list the kernel modules, some of them deal with USB modules.
One other option to try is to run the "repair" installation option with the printer unplugged. This may fix an underlying usb problem.
About the video setup problem. First of all, for Nvidia cards, the driver that comes on the DVD is the "nv" driver. This driver is not accelerated. When you do a software upgrade, a program is installed to download the "nvidia" driver.
If there was a thin frame around the screen, when you were using SaX2, then the configuration dialog may have been on the other screen output of a multihead configuration. If not, perhaps the resolution values were way off and the dialog was situated off the screen.
Consider using the -l (low resolution option) or the "-d 0" option when starting sax2.