I hope I'm understanding you correctly. Are you wanting to replace those links with flash images?
1. Um, I *believe* you can use the wordlets that control those links, and use flash code instead of text. Open the Primary Wordlets cpanel, and find each of the wordlets for those links. Then put your flash tags in, instead of the text. That should work, I think. If not, I'm pretty sure someone is working on an actual hack that puts a bunch of flash into UBB... I don't remember who that is, but you may want to search through our Beta/Finished hacks forum, as well as the Graphics forum (I think he posted some hack image requests in there), and you may want to contact him.
2. There is a hack called Statistics Hack, that shows a bunch of stats about the forums (members, posts, etc) down at the bottom. Is that what you're looking for? Last time I checked it was in the Beta forum, so look through there and see if you can find it.
Hope this helps.
---Skorpion