No problem, are you using xscreensaver, gnome or kde? If you're using xscreensaver I think can hack together a shell script to make this a screensaver If you use kde or gnome, Ihave no idea how their screensavers work, but it shouldn't be too hard to find out.
This is great, more so because I actually pair these two together myself. Done two wallpapers using vectors I used from the VC. Probably be doing another sooner or later, just need to find the appropriate poses for what's coming to mind in my head as I think about it.
On the right side of the Sta.sh page, same general place as is on the Deviation pages, there's the bright green "download" button. The SS will download as an EXE (a program) and you'll have to install it like you would a program.
...Does that help? Basically as long as you know how to download and install a program yer good. :>