Slightly OT, i just wanted to add the fun to be had with
'CGI extensions':
I used the second one to allow IE users to get their database
results in the form of an Excel Spreadsheet. By configuring
Apache to accept .xls as a CGI script (in one particular
directory), the not-so-skilled users could save the file
without having to change the name of the file from say,
foo.cgi to foo.xls - which would have confused them.
The first one can be called just like a regular image:
<img src="foo.png">. Fun stuff!
jeffa