Good luck finding it, most grid controls I have seen are at least shareware and closed source.
[link|http://www.activex.com/|http://www.activex.com/] use to be easy enough to search, but now that CNet has taken it over, you have to browse at [link|http://download.com.com/2001-2206-0.html?tag=dir|http://download.com....06-0.html?tag=dir] to find the control you want to use.
You may want to do a search at [link|http://www.sourceforge.net/|http://www.sourceforge.net/] and see what shows up. If it isn't there or in a search engine, chances are you won't find it.