Welcome to the board Lise! My parents have had dachshund for years usually minis and they are just too cute. I found you a pix of one - you need to save it to some type of photo place - someone else here can probably tell you better - and then you have to resize it to use it as an avatar! as for attaching a photo:
when you're posting, scroll down and you'll see a "manage attachments", that's what you use to put photos in posts.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"