I just downloaded USay Version 1.1 from your script browsing website.
I imported it into the "Scripts" folder.

I noticed I couldn't find it on the "Script" Tab section inside the main windows messenger page (where all my contacts are listed)
So I logged out/exitted msn and re-logged in to see if that would work.

I still couldnt find it, and when i went into a window from my friend I wanted to try it on, i typed in "/" (without quotes of course) to get the list of commands.
I did see the "/usay" and read that all I need to do is type in "/usay <message>" (without quotes).

And I tried both ways:

/usay Hello
and
/usay <Hello>

Neither way worked.
When i tried, a window poped p saying :
"The Command you entered was not recognized. If the message was not meant to be a command, insert a second "/" at its beggining".

I deleted it, and re-downloaded and then re-imported it on.
Exited msn again, and logged back on, and it still wouldn't work.

Thanks to anyone that helps!

What is the Wlm version do you have?
And Messenger Plus?

Windows Live:
I dont really know where to find this, i clicked the "About" section and it said this (if this is it):
"Version 2008 (Build 8.5.1302.1018)

Windows Live Messenger Plus!:
"Version 4.80.0.356" - Released 1/31/2009