Good afternoon,
The specific item you mention is in default.asp, at about line 475
<td class="smText"><% = strTxtTheTimeNowIs & " " & TimeFormat(now()) %><br /><%
Note the use of the style smText, however smText is used in many other places.
So you will need to create a new style, copied from smText and then experiment with you own forum's background to see where you can leave smText and where you need to use your new style.
If you don't have much in the way of development tools you can open a cmd window, cd the folder for the source files and do
find "smText" *.asp.
The slight problem you have is that when you upgrade your forum you will have to put these changes back.
On my forum I have just commented this lines out as I didn't want this information displayed.
Bye
Ian