You can put any app into landscape view - if you do this often, assign landscape view to one of your hardware buttons.
Anyway, if you don't want to shell out any cash, ftxPBrowser is an excellent free browser that gives you tabbed browsing and fullscreen browsing. Won't help with IE 6 compatibility though.
http://www.freewareppc.com/docs/ftxp...bile2003.shtml
If you don't mind spending $30, I hear that the Java-enabled NetFront is very good. It won the Pocket PC Magazine award in the Browsers category.
http://www.pocketpcmag.com/awards/ca...ndWebUtilities
Personally I use the free ftxPBrowser and am very satisfied with it.