Upload your pictures to a free picture host like
Photobucket.
After you upload your pics, mouse over each picture; just under the pic you will see 4 horizontal options in blue (share/edit/delete/move) and 4 vertical Web options; the 2nd will say Direct Link. Left click the http// address box next to Direct Link; this will copy it.
**you can resize your pix within Photobucket before copying, if they are too big. Click the Edit button and follow the directions.
Next, start a new thread in iRV2 or hit Reply in an existing thread, then click the little (mountain landscape) Insert Image symbol in the row of symbols at the top of your open reply box (2nd symbol from the right).
A pop-up will ask you to copy the URL; just press Ctrl key and V key together (paste) and it will paste the URL from Photobucket into the box. When you click OK, the picture will appear in your post.
Its easy once you've done it a time or two.