4
It is very simple. You have to edit your template (because XOOPS uses Smarty Engine), which is located in :
modules/system/templates/system_userinfo.html.
There you have something like this:
<tr valign="top">
<td class="head"><{$lang_icq}></td>
<td class="odd"><{$user_icq}></td>
</tr>
so, you localized where you have to change
So introduce changes :
<tr valign="top">
<td class="head"><{$lang_icq}></td>
<td class="odd">
<img src="http://www.gadu-gadu.pl/users/status.asp?id=<{$user_icq}>&styl=1">
<a href="gg:"><{$user_icq}></a></td>
</tr>
to give output <img of status><gg:your gg number>
it's all :P