Button Success

I've managed to add a button to the side of my blog. This is how I did it
I saved the button I had copied from another blog to my computer.  I then uploaded it to photobucket (apparently it works with other photo hosting websites such as flickr, but I've not tried that)

When you look at the photo in photobucket hover the mouse over the picture and you should get a range of options, one of which is "share".    Select share and the option "post to website".   The third tab along is "get link code"   This is the one you want.

Then select "HTML for websites and blogs" and the option "clickable thumbnail.  Highlight the code in the box - it is a long code - and then copy it.

Final step is to return to your blog design page, add a gadget, and choose the one which says "HTML code"   paste the complete code in, and save. 

Hopefully that should work for you.