Martin, sign up to PhotoBucket.com - it's free.
Upload the photos from your PC to your PhotoBucket album and once they are there, to the side of each photo, in a box marked "Share this image", there is a link for "IMG Code".
Copy everything in that window, between and including the [img]and[/img] tags, into your message on this forum.
When you click on the Preview button, you should see the image appear in your message.
Any problems, drop me a PM.