The first thing you need is a Photobucket account. Once you have that set up go into account options and you will find an email address for emailing photos directly to your Photobucket account. I saved that email address on my storm under Photobucket in my contacts.
The second thing you will need is Capture it or QuickLaunch 2.0, so you can take screen shots.
Select the picture you want and choose the email option then select your Photobucket email address.
You will receive a confirmation email from Photobucket saying your pic has been uploaded, click the link in the email
Which will then take you on the web to Photobucket and your pic you just emailed. Tap the screen and zoom in until the picture fills the entire screen. Then Click your BB button and select full image
It will then reduce the pic a little for clearer viewing. Click your BB button again and scroll down to image address
Select copy address
OK so you are now done with Photobucket go to the page you would like to post the picture in with your phones browser. In the reply box type your message then for your pic type the following:
[IMG] click your BB button and choose paste option (it will paste the image address you copied) then at the end of the address type [/IMG]
**Note that the IMG is capitalized on both ends and don't forget the forward slash in the last bracket. **
Once you have typed that click post on your message and presto you have inserted your screen shot. This is great when away from a PC and needing to post a picture or screen shot.