Hi Dave and welcome, I've only just joined myself, seems pretty quiet so far, but I'm sure we can change that!
Easiest way to post pictures is to get yourself a 'Photobucket' account.
Go to
[You must be registered and logged in to see this link.] register as a new user and you can set up an account free of charge. You then upload you photos to your album by clicking the green 'upload now' button.
When you have photos you want to post on a chat forum like this you open two browsing sessions, one in your forum and the second in Photobucket.
Type your message on your forum like I'm doing now, then when you want to insert a photo go to your Photobcket album, find the picture you need and put your pointer over it.
You'll then get a small menu below it, LEFT click the bottom button 'IMG' and it should say "Copied".
You then go back to your forum message and right click, choose 'Paste' and you'll get something like this appear [IMG]
[You must be registered and logged in to see this link.] I've disable this one, but your picture should appear like this:
[You must be registered and logged in to see this image.]Simple really bud!