There is no 64-bit version of VectorLinux. I think the only KDE 3.5 (3.5.10?) is the Classic KDE version, which is a free download.
I don't know if there is any work going on with a 64-bit version. They have been started in the past but never finished or released.
I don't think any stickers are available, but someone uploaded some nice designs if you want to print your own on a label of your choice. Look here: http://forum.vectorlinux.com/index.php?topic=7432.0
I printed my own a few years ago and have them on my two desktop cases.