There is no way to download ie5 ot greater on your ppc, but their is a registry trick to make your ie identify itself as ie5.5
To do this you have to have a registry editor on your pocket pc. If you dont have one go
here
This is what you have to do:
Browse to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Internet Settings\User Agent\
Change the default value from "Mozilla/2.0" to "Mozilla/4.0".
Change the "Version" value from "MSIE 3.02" to "MSIE 5.5".
Change the "Platform" value from "Windows CE" to "Windows NT 5.0".
Some web sites may even just compare the user agent string, so if this is not enough, browse to the Post Platform\ sub key and delete the "240x320" value (it have no data).
This registry hack will make Pocket Internet Explorer identifies itself as Internet Explorer 5.5 running on Windows 2000, this may let you connect to web site that check the browser version, but it will also prevent web sites that provide Pocket PC specific content to be able to know you're actually using a Pocket PC.