If you have Microsoft Office 2010 or newer (not sure of earlier versions),  there probably is a Picture Manager program that will allow you to not only organize your photos but also to resize, alter contrast and brightness, crop and some other things.  Then you just go to the file tab and save it to your computer in whichever file you wish.  It works quite well and then you can load the picture directly to the S&T post by clicking the "Choose File" button and find the file on your computer and then post it.  You can add "Choose File" buttons by clicking on the Attachments + button and add up to five additional posts with each reply.

Windows Accessories/Paint works to resize your pictures also.  So if you have a Windows system you can use Paint to resize your pictures as well. 

There is also an online resizer called irfanview: Click Here

DO NOT USE PHOTOBUCKET...THEY'VE CHANGED THEIR SERVICE AND NOW THE PHOTOS YOU'VE POSTED PREVIOUSLY ARE NO LONGER IN OUR POSTS. SO SOME OF OUR BUILD THREADS ARE INCOMPLETE BECAUSE OF THEIR NEW POLICY.
OUR BUILD THREADS WILL NOT HAVE PICTURES BUT BLACK SQUARES ASKING THE MEMBER WHO POSTED THEM TO UPGRADE/UPDATE THEIR ACCOUNT WITH PHOTOSHOP
Tom