I just did this so this by creating a photo hosting account with Photobucket.
Briefly: I went to
http://photobucket.com/ and created a new account (free) where you can upload pics from your PC to your space in Photobucket.com. hosting server.
Follow the process to upload your pics.
Once your pics are uploaded to Photobucket, you can add a reference to your pics (via the Photobucket url provided) in the bladeforums post.
Open a post on Bladforums, enter your normal text.
Select the insert image (little yellow one on the top right) icon in the Bladeforum post menu.
A popup entry panel will appear.
Enter the Photobucket url of the pic you want to include in the popup entry panel and select OK;
The pic URL (not the actual pic) will be inserted into the post.
Do this for as many pics as you want.
Submit the post and the pics should appear.