Later builds of
Minimo, a Pocket PC port of desktop Web browser Mozilla / Firefox of which I've often reported in my blog (
use the blog search engine to look up these articles), already contain GPS functionality enabled, just like MultiIE 4, the Pocket Internet Explorer plug-in (see tutorial of the latter
here).
The tutorial, which is really worth reading,
can be found here. It's really worth checking out if you like the geo-location support of MultiIE 4.