How do i change my default browser in mirc 6.1?

Forums like this one have a search option. Use it. Searching for "default browser" gives a large amount of hits that deal with this question, one of which is here .

Maybe it's just me, but my v6.1 came with the following in the versions.txt..

29/08/2003 - mIRC v6.1

Fixes/Additions:
1.Fixed editboxes in options/custom dialogs using double-border when
themes are enabled.
2.Fixed default browser issue.
...

Please note the bold text.