it's based on internet explorer (which most people use), so if you don't have it installed don't download the Abandonia Web Browser
.net 1.4 is as far as I know not needed.
and MSVC++ 2005 is the same as Microsoft Visual Studio 2005 (C++) Express Edition.
This is more or less just an add-on to IE at the moment, but I plan to add more things later.
@Ignite, IE is installed as default, you don't need to change browser, this just uses IE unless you have uninstalled it.
Extra programs needed to use AWB (Abandonia Web Browser)
.net 2.0 (Microsoft)