Hello.. I am a newcomer, don't ask.

Ok. So I have knoppix. My devices:
00:00.0 Host bridge: VIA Technologies, Inc. VT8753 [P4X266 AGP] (rev 01)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP]
00:09.0 Ethernet controller: 3Com Corporation 3c905 100BaseTX [Boomerang]
00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE (rev 06)
00:11.2 USB Controller: VIA Technologies, Inc. USB (rev 1b)
00:11.3 USB Controller: VIA Technologies, Inc. USB (rev 1b)
00:11.4 USB Controller: VIA Technologies, Inc. USB (rev 1b)
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235 AC97 Audio Controller (rev 30)
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)

I have a game, ATITD. I try to load it, you know, and:
1) Using it I have 0,5 (?) FPS.
2) I have this error in the shell when the game's running from it:
knoppix@ttyp0[eClient]$ ./elaunch
Xlib: extension "XFree86-DRI" missing on display ":0.0".

So I gotten me the drivers. RPM package. Used alien -i to install it. And got a weird error saying that:
dpkg: unable to access dpkg status area: Read-only file system

So, what do I do to get that installed?