Join http://photobucket.com its fast and free.

After you join Photobucket you can upload your pictures from your computer to Photobucket.
After the images are uploaded they will assign four links, EMail, IM, Direct Link, HTML tag, & IMG code.

The IMG code is the easiest to use. Just right click on the IMG URL tag and it will say copied.
Now when you are posting in a thread just right click again and left click on paste.
The link will be displayed, not the picture.
To see the picture before you post hit the Preview Post button and voila, you have pictures.

Another way with Photobucket is right click on the direct link.
This link can be used to re-direct a user to the image on your photobucket page.

Also, the direct link can be used to post pictures here. Hit the [Insert Image] button
Insert the direct link and the picture will appear without hitting the preview post button.