There is really no big difference on the codes used.
Two main differences: 1. You need to post the codes in the text box labeled Signature, that will show near the bottom right of the page, when you edit your forum profile. 2. You must make sure that the pictures you use are no more than 100 pixels in height. You must resize them before you upload them. Not sure what apps you have to do this, for simple tasks like this I use Microsoft Office Picture Manager.
Of course, if you prefer, you can just email me the pictures and I will add them to your sig.
I didn't add a link to our Flickr tool in the profile page, but you can always start a post, use the tool to add the code for the images in that post, and then cut it and paste it into the Signature profile box.