GS108Tv2 GS110TP 2 x vlans @ 1 port

Dear Netgear users.

Now I am tired of trying to get a simple vlan situation to work.
I need help!

On daily basis I administrate 100's of HP Procurve switches with more than 100 vlans, so that I couldn't get my small home project to succeed made me crazy.


I have my ISP router at the attic as well as my GS110TP.
GS110TP:
I want to use port 1 untagged(vlan10) to ISP router.
I want to use port 2 tagged(vlan10 & vlan1)

In the basement I have my NAS and a GS108Tv2

GS108Tv2
I want to use port 1 as uplink(poe) tagged vlan10 & vlan1
I want port 2(untagged vlan10) -> eth0 on Synology
I want port 3(untagged vlan1) -> eth1 on synology

See picture.
http://www.digitalhome.dk/NetworkVLANS.png



Configuration:
I simply go to webinterface on each swtich, create the vlans, and tag/untag as written above.

Can you tell me if it is possible at all? And if so, is there something special to take into account?
Have I missed something in the webinterface?