I'm hoping someone can point me in the right direction on a problem.

Basically a client of mine wants to be able to run a check through a scanner and have info like the routing number appear in a form on his system's web interface. The scanner is a MiniMICR made by Magtek, which is connected via serial. Interacting with the scanner itself is very straight-forward, but my problem is getting the data from it into the browser. The client wants this to work with IE and Firefox, on Win 95 through Vista.

I'm not sure how to approach feeding data into browsers like this, so any help would be appreciated.