> Is it something you just need to run on your local computer to automate
> something? I wonder if you can use the AutoIt
> (http://www.autoitscript.com/) COM interface to do this...
Yup, sure looks like it can be done:
[start IE here with the com object or whatever to the proper page]
$autoitx=new-object -com autoitx3.control
$autoitx.winactivate("some dialog box title","")
$autoitx.send("test_user")
[etc.]
Tried the above, and got "test_user" written to the username box.
VBScript also has some send keys functionality though, but I don't know
if it can change the "active window focus" like autoit can.