Traffic Priority Configuration

Hi,
I have inherited a PTP wireless network with 1 AP and 4 CPE devices that was built by a contractor for our workplace. The wireless link is working great, however we are looking to implement prioritization. I’ve been reading the forums and the wiki, but I am a bit confused on how to implement what we need. The equipment is has a very basic setup, with no configured firewalls or any other customizations that I have noticed.

AP version is RouterOS 3.10 *Corrected version
All devices are on the 192.168.70.0 network

Priority is needed for traffic on:
-port 3389 to or from any destination
-port 80 to a specific internal IP. (50.10 on a tunneled vpn)
-icmp traffic - ping replies used for monitoring
-snmp traffic - perhaps not nessecary?

All other traffic can be “best effort”

I have experience configuring this on cisco asa devices, but I’m not sure where to start here…
Any help would be greatly appreciated!

I’ve been looking at this: http://wiki.mikrotik.com/wiki/Manual:Queue
But it doesn’t seem to apply to this scenario, since all the Mikrotik routers are operating in bridged mode. Does this mean I can’t mark traffic?

In case anyone else runs into this, I found an excellent wiki article here: http://wiki.mikrotik.com/wiki/TransparentTrafficShaper that explains what’s needed for a bridge scenario.
Thanks!