Here is a useful registry tweak that allows you to revert back to the old-school (but flashless) IE5-based Internet Explorer Mobile... Right now it only works on the Sprint Treo Pro, but when new phones are updated to IE6, this edit should work..
HKLM\Security\Internet Explorer\MSHTML=0
If you don't like doing registry editing,
here is a .CAB for doing the same edit...