Not sure if there is a more appropriate group to post this....if there
is, please let me know.

Anyway, here's what I'm faced with:

I have a two-storey home with a full 8-foot ceiling basement. The
basement was roughed-in for a future bathroom. The rough-in includes
the toilet, basin and bathtub plumbing and venting. I'll be installing
a toilet and a vanity (or pedestal sink...?) but will not be installing
a shower or bathtub. Instead, I'm installing a wall-mount urinal.
I've adjusted the plumbing accordingly for that (removed the trap in
the floor since there's a trap built into the urinal already), and the
venting for the urinal was already in place. So here's what I want to
do now:

I'm installing an 8x8 bar in the basement as well. I want to have a
small sink built into the bar but I'm not sure how to go about plumbing
that in. The sink will be approximately 8 feet away from the drain for
the urinal and approximately 12 feet away from the drain for the sink.
Where would be the best place to run my drain to? Both are currently 1
1/2" drains. Also, where can I vent to? The existing vent is
currently the same distance away as the drain....going straight up and
out the roof. Do I need to vent my new bar sink closer than 8-12 feet
away? And if so, can I go horizontal to the outside wall, then
vertical and out the side of the house with an elbow?

I've heard about these venting attachments things you can attach to
your trap or something also...water activated as I recall? They open
and allow the air to escape without doing all sorts of complex ABS runs
within closed spaces (bars, islands, etc.) Can anyone shed light on
this also?

I hope I've covered all of the details....any help would be greatly
appreciated.

Corey