Pocket Internet Explorer is way outdated sadly, so it won't load most 'rich' content sites (that I know of). If the mobile version of Yahoo doesn't work for you (
Yahoo! Front Page ), I would try out
Opera Mobile 8.65 for WM 2003. There should be something like a 30-day trial once you install it. One note of interest: Opera Mobile 9.5 Beta is also out, but that only runs on WM 5 or WM 6... so yeah, WM 2003 is aging itself, but I'm guessing 8.65 should work for your needs.