Booting up Ubuntu

[Goggles1215]

When I was on Ubunutu, the update manager came up and said that there was some updates, so I clicked to install them. after that a restart prompt came up and said to restart the computer, so I did. When it reboots, it the normal screen to pick which program to boot, Ubuntu or Vista, then I click on Ubuntu, but it doesnt load up like normally. A terminal like screen comes up and this is what it says:

GNU GRUB version 1.97~beta4

[ Minimal BASH-like line editing is suported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device/file completions. ]

sh:grub>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~

Once I push TAB a lists of possible commands come up, but I have no idea what to type in. When I push TAB this is what comes up:

Possible commands are:
. [ badram boot cat chainloader configfile cpuid dump echo exit export halt help initrd insmod linux list_env loopback ls lsmod parser.rescue parser.sh reader.normal reader.rescue reboot rmmod root save_env search set sleep source terminal_input.console terminal_output.console test unset
sh:grub>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~

What do I need to do in order to get Ubuntu to boot up again and get back to where I was?

[Feeyo]

First thing: I do not understand how a big Distro as Ubuntu can use a beta grub system in their Stable release version...

Anyhow.
Try:

linux /vmlinuz
initrd /initrd
boot

If that does not work try using TAB to see the kernel name and or initrd name like:

linux /TAB
initrd /TAB

Good luck.