LinuxQuestions.org - screen resolution too low

Hi, I just loaded Ubuntu 8.10 this morning to my old, clean-wiped Toshiba Dynabook Satellite, but can only get a 800x600 screen resolution, which means about 20% of my screen right now is black. This is the highest ressolution option that I have under the Setup. The computer has an Intel Pentium III. I have searched the forums and tried a number of fixes with no luck. Here is my system config:

00:00.0 Host bridge: ALi Corporation M1644/M1644T Northbridge+Trident (rev 01)
00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:04.0 IDE interface: ALi Corporation M5229 IDE (rev c3)
00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link Controller Audio Device (rev 01)
00:07.0 ISA bridge: ALi Corporation M1533/M1535/M1543 PCI to ISA Bridge [Aladdin IV/V/V+]
00:08.0 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
00:0a.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d)
00:11.0 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus Bridge with ZV Support (rev 32)
00:11.1 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus Bridge with ZV Support (rev 32)
01:00.0 VGA compatible controller: Trident Microsystems CyberBlade XPAi1 (rev 82)
02:00.0 USB Controller: NEC Corporation USB (rev 41)
02:00.1 USB Controller: NEC Corporation USB (rev 41)
02:00.2 USB Controller: NEC Corporation USB 2.0 (rev 02)

also

Module Size Used by
ipv6 263972 8
binfmt_misc 16904 1
af_packet 25728 2
sco 18308 2
bridge 56980 0
stp 10628 1 bridge
bnep 20480 2
rfcomm 44432 0
l2cap 30464 6 bnep,rfcomm
bluetooth 61924 6 sco,bnep,rfcomm,l2cap
ppdev 15620 0
speedstep_lib 12676 0
cpufreq_stats 13188 0
cpufreq_conservative 14600 0
cpufreq_userspace 11396 0
cpufreq_ondemand 14988 0
cpufreq_powersave 9856 0
freq_table 12672 2 cpufreq_stats,cpufreq_ondemand
sbs 19464 0
sbshc 13440 1 sbs
container 11520 0
pci_slot 12680 0
wmi 14504 0
iptable_filter 10752 0
ip_tables 19600 1 iptable_filter
x_tables 22916 1 ip_tables
lp 17156 0
usb_storage 82752 0
ehci_hcd 43788 0
libusual 30356 1 usb_storage
pcmcia 43052 0
snd_ali5451 27532 3
snd_ac97_codec 111652 1 snd_ali5451
ac97_bus 9856 1 snd_ac97_codec
snd_pcm_oss 46848 0
snd_mixer_oss 22784 1 snd_pcm_oss
snd_pcm 83204 3 snd_ali5451,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 10884 0
evdev 17696 8
video 25232 0
output 11008 1 video
snd_seq_oss 38528 0
snd_seq_midi 14336 0
snd_rawmidi 29824 1 snd_seq_midi
parport_pc 39204 1
parport 42604 3 ppdev,lp,parport_pc
snd_seq_midi_event 15232 2 snd_seq_oss,snd_seq_midi
serio_raw 13444 0
psmouse 45200 0
snd_seq 57776 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 29960 2 snd_pcm,snd_seq
snd_seq_device 15116 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
toshiba_acpi 17088 0
battery 18436 0
ac 12292 0
button 14224 0
snd 63268 16 snd_ali5451,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_tim er,snd_seq_device
isp1760 26120 0
pcspkr 10624 0
yenta_socket 31756 3
rsrc_nonstatic 19072 1 yenta_socket
i2c_ali15x3 14852 0
i2c_ali1535 14340 0
soundcore 15328 1 snd
pcmcia_core 43412 3 pcmcia,yenta_socket,rsrc_nonstatic
snd_page_alloc 16136 1 snd_pcm
ali_agp 13696 1
i2c_core 31892 2 i2c_ali15x3,i2c_ali1535
shpchp 38036 0
agpgart 42184 1 ali_agp
pci_hotplug 34976 1 shpchp
ext3 133256 1
jbd 55828 1 ext3
mbcache 16004 1 ext3
sr_mod 22212 0
cdrom 43168 1 sr_mod
sd_mod 42392 3
crc_t10dif 9984 1 sd_mod
sg 39732 0
ata_generic 12932 0
pata_acpi 12160 0
pata_ali 16516 2
e100 41356 0
mii 13440 1 e100
libata 178208 3 ata_generic,pata_acpi,pata_ali
scsi_mod 155212 5 usb_storage,sr_mod,sd_mod,sg,libata
dock 16656 1 libata
ohci_hcd 32016 0
usbcore 149360 6 usb_storage,ehci_hcd,libusual,isp1760,ohci_hcd
thermal 23708 0
processor 42156 2 thermal
fan 12548 0
fbcon 47648 0
tileblit 10880 1 fbcon
font 16512 1 fbcon
bitblit 13824 1 fbcon
softcursor 9984 1

All help appreciated. This is very frustrating. I don't know if I am missing a driver or something and I am a complete Linux newbie. Can anyone walk me through a fix?