Hi Don and welcome.
With all the different forums and formats out there it can get confusing. Swizz and Crusty suggesting a central location makes perfect sense. You'll still need to figure out the format to upload somewhere though, then you can use "link to image" options around the net rather than posting pics at each place.
Our pic uploading format here is called the attatchment editor found just below the text box while in "add reply" mode to post. Once you've finished your post text scroll down a tad to see the attatchment editor options.
To find the pic file on your computer you'll need to click on "browse" which opens the small box to choose your picture file. Once you've selected the pic file you wish to upload click "open" on that box, the small box will close, you've now got the file selected to upload. Now you will need to click on the green "UPLOAD" button. Once that task bar completes you've now uploaded the pic and it will automatically attatch to the end of your post or you can manually place the pic into the post text somewhere.
As website owners, Denise and myself would rather see you all uploading your pics straight into the forums but that isn't required as you can see. Once you've got a place to upload figured out, you can use it as a central pic location and link to your images from that spot.
We do offer an unlimited amount of pic space here though so have fun and give it a shot.