Question: can I upload files using `selenium RC` in IE?

Answer: 
Go through this post . will help you to upload file in selenium RC
<http://automationtricks.blogspot.com/2010/09/how-to-upload-file-in-selenium.html>
Thanks 
Niraj
In firefox and other browsers you can upload a file just using type command of selenium. 

See here <http://aboutselenium.blogspot.com/2011/02/handling-file-upload-using-selenium.html>