Hello acters, The Web Info tab uses Internet Explorer as the internal browser, so unfortunately there is not another way to select a default browser. If you would like to make a request to have this feature changed, please let our product managers know by posting on the Ideas board in this forum. Just click "Share Ideas" at the top of this thread.
Note: Effective 6/1/13, Sage no longers provides support for the Act! software. This is now provided by Swiftpage.