Vista - Messenger error, can't sign in. (help please)

4 days ago I got signed out of WLM and when I tried to sign back in I got the message "We can't sign you into WLM ... service is unavailable 8100030d." Since then everytime I've tried to log in I get the same message.

I did some searching and found a few things but nothing worked.

I tried turning it off and on again
I uninstalled and re-downloaded messenger
I have the newest version of messenger
I created a new account but still couldn't log in with that.
My Date/Time is set to the correct time
I disabled time zone alarm
WLM is allowed though my firewall
I can log into my hotmail online and sign into webmessenger

I read something which said to register some dll's but when I did I got another error.

"The module MSXML3.dll was located but the call to DLLRegisterSever failed with error code 0x80070005."

"The module wintrust.dll was located but the call to DLLRegisterSever failed with error code 0x80070005."

"The module initpki.dll failed to load ... The specified module could not me found."

Any ideas of what I have to do to make it let me log in again?

(i'm using Vista home premium on a laptop btw)