They must be on a server first. You can use the TDI club server or any other server out there. Upload them there and then post the link to them here. There's a way to post an inline link so that the picture show up in the thread rather than just the link.
You might go ahead and state your issue while you're looking that up.
What kind of car do you have? Is your state one of the ones that mandated use of b20?