How to add an image on a server's loading screen?

Everything is in the title! I host a small server for a couple of friends and I and I’d like to add a picture on the loading screen, just to customize it a bit, and perhaps a loading sound?
Fact is I have no clue AT ALL on how to do that and I’d like have some help about that. Thanks in advance :slight_smile:

PS: I hope I’m in the right section, I couldn’t find anything related to dedicated servers out there. Also, english isn’t my first language (I’m french) so sorry if I made some mistakes.

First I would like to say, I do hope you know it has to be a webpage (HTML)

http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/indexb59e.html <-- hao do!

No problem :slight_smile:

Ok I’ll check it out and see if I can make this thing work, thanks for the link =)