More time posting than coding
Addanc is mostly harmless
I suggest openSUSE. Very good hardware detection (RaLink and Intel wireless chipsets run out of the box, Atheros wireless chipset easy to set-up through MadwifI driver, should be possible to set-up any other wireless chipsets (assuming availability of windows drivers) through Ndiswrapper). Not found an ethernet NIC that doesn't work under Linux out of the box. Nvidia graphics cards easy to set-up with Nvidia driver so that you can get all the wonderful accelerated 3d. The equivalent of Control-Panel i.e. YAST is very easy to use. I would also recommend the KDE desktop, lot more intuitive than Gnome.
The soft-modems (win-modems) are not well supported on any distribution. The soft-modem hardware is cheap as chips (thats why they use'em); since a lot of the functionality is delegated to driver software including signal processing (with-out detailed data-sheets drivers probably difficult to produce).
Likewise with broadband; buy a separate modem/router box (e.g. Netgear DG834G). Avoid Linksys.