Hi, VLAN newbie here!

I need to setup a VLAN using a SLM2008 and connect it to our Fortigate Internet Firewall.  I'm doing this to segregate the SLM2008 traffic from the main network which is already connected to the firewall.  I have created VLAN #200 in the SLM2008.  I have read all the SLM2008 documentation and spent quite a lot of time on these forums but can't seem to get this working.

Questions:

1. The firewall is seen on the network as another multi-port hub, so does this mean that the SLM2008 must be connected to it via a VLAN trunk link?

2. On this forum someone said you must use Port 1 of the SLM2008 if you want to do trunking?  True?

3. If #2 is correct, then how do you setup port 1 as a trunk?  There is no trunk option in the web gui.

Thanks in advance!

Marty