I use two free image programs to make processing photos to be posted easy.
Editor:
http://www.irfanview.com/
Photo Resizer Lite
http://www.ShowYourPhotos.com
I far as I can remember, the image to be posted can be no larger than 1.24MB. You can only post 1(one) image. For quick down and dirty one photo, no editing, it's hard to beat Photo Resizer Lite, lovely little program.
To post multiple, use the panorama-vertical feature in Irfanview. It combines them into one photo.
Here's what I do in Irfanview:
1. Open photo.
2. Crop photo.
3. Resize photo to 640x480. Do the same to the other photos you wish to combine and save them with names you can remember to get the order in panorama right. You can re-arrange them in the panorama maker.
4. Combine in panaorama vertical.
5. If I am NOT going to add text, I save as a JPEG with say a 90% quality under a new name for the photo. Leave Irfanview open and goto folder you saved in, look at size of photo, if too big, resave to say 70% quality.
6. If I AM going to add text, I go thru step #5 then open that file I have saved as the proper size again in Irfanview. i.e. The photo from the camera initially was named Ring.jpg, I edited in Irfanview and saved as Ring1.jpg 90% quality, it was larger than 1.2MB, so I resaved at 70% as Ring2.jpg. I close Irfanview, reopen it, open Ring2.jpg, add the text into the photo, now I save as a GIF, NOT JPEG.
If you save as a JPEG it will distort the text, the GIF when posted will be grainier, but hey, nothing in life is free.
BarnacleBill