I loaded ubuntu 10.04 done the updates rebooted and I lost grub 1.98 how do I fix this problem ?

First step is to reinstall Grub2:
   https://help.ubuntu.com/community/Grub2#Reinstalling%20from%20LiveCD
If it fails, we will investigate.
Else please, could you mark question "Solved".

HI :)

Yes 'just' reinstalling GRUB2 fixes this in almost every case. Can you use the Ubuntu Cd to boot-up the machine to a "LiveCd session"?
https://help.ubuntu.com/community/LiveCD

From there please access a command-line, try the top taskbar and click on

Applications - Accessories - Terminal

and give us the result of one of the first commands in delance's link
https://help.ubuntu.com/community/Grub2#Reinstalling%20from%20LiveCD
if you can do so fairly easily. The LiveCd should be able to find your internet connection fairly easily. Just click on the Firefox icon on the top-taskbar and then navigate into this thread. Ok, the output that might help us help you is from the command

sudo fdisk -l

where "-l" is a lower-case "-L". It might be best to use the mouses right-clicks to copy&paste as CtrlC and CtrlV don't usually work on the linux/unix command-line. The useful info in the output is the first and last column's as they show address (theat's the crucially important bit) and the type of formatting on that partition. For a dual-boot system we could expect something like

/dev/sda1 blahblah Fat32
/dev/sda2 blahblah Ntfs
/dev/sda3 blahblah Extended/W32
/dev/sda5 blahblah Linux
/dev/sda6 blahblah LinuxSwap

Sometimes the blahblah bit can be interesting but usually it's just numbers showing start and end addresses which is almost completely useless to anyone else unless we notice the linux partition is tooo small (unlikely by the sounds of your case). Notice that in my example there is no sda4. If you check the start and end addresses careful (don't bother) you might notice that sda5 and above are contained inside the Extended Partition. This is normal. That is what an Extended Partition is made to do. Usually there will be a "warning notice" to say that partitions are not in number order on the disk. Again, that is normal.

In my example the sda5 partition would be the one i would reinstall grub2 onto but your hard-drive's numbering will probably be different from mine.

So, anyway, please let us know how it goes especially if you have any trouble booting up with an Ubuntu CD (any since Ubuntu 9.10 should be good though)
Good luck and regards from
Tom :)