Elaborating on fivedollah's reply, I use imageshack for mine, and as a general rule I'd suggest 800x600 resizing, and no thumbnail. Once its uploaded, click on the individual photo you want to do first,etc. and select all of the code on the right side of the page under the heading Forum-use (unless its changed). Do that for each photo, copying the code into your ride thread making sure to delete the individual "Image hosted by Imageshack.us" under each piece of code.
Check out mine if you wanna see how that all looks.