Event ID 100 not being tracked SP1

I know this must have been posted somewhere, but I've searched through this forum pretty thorough and could not find anyhting relating to THIS problem - if it IS somewhere here, please feel free to flame me but tell where it is.
It does not list ID 100, but I know there a an update that will - possibly - fix it. Searching through the web, I only found one reference to it, but - of course - M$ took it down.
Does anyone know where it is or where I can get my grubby little fingers on it?
Of course if you have another idea as to the problem, I'd be glad to hear it!
The system is taking 3 minutes between welcome and desktop - started about 2 weeks ago and nothing has been added or updated (that I know of) before or after that time.

Sorry I thought it was in the title - the event viewer.

I might consider DISM IF I knew which one I was missing. I'd rather not install anything but what I need.

SIW2 said:

If you think you are missing some updates you can try dism++ or simplix

BUT I don't know what I'm missing (no pun intended).

SIW2 said:

It will scan your system and tell you. Click Updates in the left pane, then click scan

It will explain what each hotfix does?

SIW2 said:

try it and see.

No, it doesn't. I've 6-10 highlighted, but it doesn't tell me what they're for. AND I'd rather install JUST the one I need. The rest of the system runs dandy.