can anyone tell me how?

Well First Download it in imageshack then Copy and paste in The Pm.

That's not very specific ^

First: Save the image.

Second: go to imageshack.com and make a account

Third: Upload the picture of your liking.

Fourth: Got down to forum URL and copy that

Fifth: paste that link on whatever/wherever you want the picture

Sixth: Delete the "uploaded with image shack u.s" text (if you want)

Then you are done, hope this helped!

Well, I prefer "Imgur", cause you dont have to sign up to get the direct links you need for the forums.

1.
Make sure you've saved the image of the flat.

2.
Make a quick registration on the website ImageShack (recommended), or use the TinyPic (no need to register here).

3.
Upload the image file of your flat.

4.
Copy the designated link to forums (it has this format:).

5.
Paste this link into your post (make sure you copied the correct link).

6.
Send the message to the recipient.

Ready, the flat has been sent.