Sorry, for the time without answer, but I was thinking in one thing...
How the problem started???
Did you have programs like Smiley or other??? Maybe another program / Patch that use used caused the problem???
And, whats the message that appears to you after you clicked the "Import" button, when you try to instal a script???
Another thing: I googled the error code, but as I could see, there is the same number to a lot of problems... so using it would be hard...
On the other thread, the guy solves the problem using the "Run> Start -> Run -> regsvr32 jscript.dll" thing....
EDIT: Also forget to ask: What script(s) do you use
or is trying to use???