Use an image hosting site and simply upload your image from wherever it's saved on your computer. The image hosting site will then give you a URL which you copy and then paste where i have put the X:
(img)X(/img) - substitute [] for the curved brackets i have used in order to get the example to work.
OR
If you look at the row of icons above where you type your message there is an icon next to the Adobe acrobat icon, to its left which is the picture icon. If you press this it automatically puts ([img)(/img) in the text area (again i have used curved brackets rather than the [] you need otherwise it won't show as an example.
HTH
As for the pads... do you mean the black 'feet'? If so there are housings on the door frames of each door. You need to remove the little black nipples and keep them somewhere safe. The pointy bits of the feet then go in these holes that you've just exposed and you tighten the feet up with the key supplied.
WARNING - it's a bit of a faff the 1st time you do it so if you aren't confident and careful you can easily scratch your paint work trying to line the damn things up, so you might want to get another pair of hands to help.
