To upload an image;
Go to a hosting site such as imageshack: http://imageshack.us/
Click browse and locate the image. Ensure resize image is ticked and select 640 x 480 (for message boards). Click host it.
After the image has uploaded imageshack displays a list of links to the image. Highlight the text in the line at the bottom of the screen "direct link to image" and copy the text (press CTRL C to copy).
On your post type
and insert the text from imageshack inbetween the two (press CTRL V to paste), so it reads something like:
When you submit your post the image should now appear.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local