<HTML>I looked up finishline (finishline.featureditems.com) and, in terms of functionality, I have no idea how StrokeIt would remind you of this. From a design standpoint, they have similarities (time-saving, global commands, low memory usage, etc) but functionally they are entirely different programs.
Adding keyboard autocomplete would essentially involve writing a completely different program from scratch, as it wouldn't benefit from any of the existing StrokeIt code or functionality.
Of course, if you just want some nice command line autocompletion, I'd recommend grabbing a nice port of BASH or TCSH. In addition, most *cough* web browsers already have URL autocompletion. If you don't need to intelligent or autocomplete, you could simply configure strokeit to send "MyUsername [tab] MyPassword" to automatically complete forms.
Sorry for being unable to otherwise complete your life :)
-- Jeff</HTML>