Computer and phone on different vlans but in same access port?

Yes, I was able to gain access to the switch and you are correct - it does specify "switchport voice vlan 200".  I take it from your immediately identifying it as a Cisco switch (it is) that this isn't common?  Most layer2/3 switches CAN'T do that?  How would the whole pc-plugged-into-the-phone work in that case - both have to be on the same VLAN or no vlan at all?  Curious about that for new deployments, but trying to figure out the best (and least expensive) way to do a new deployment on current equipement here.  Trying to see if we have a Cisco with 1 free port but 5 computer / phone pairs to connect if we can simply use a standard 10/100/1000 switch plugged into that Cisco port, then the phone / computer pairs plugged into that switch.  The switch isn't VLAN aware, so it should just pass the info along and the port on the Cisco will sort it out and not care about the switch or the fact that there are 10 devices working off it, correct?  Thanks, you have been most helpful so far.

Not sure I understand why it wouldn't work - same 2 VLAN ID's (one specified as the voice) - what is different between having 1 pair connected of 5 pairs connected through a switch?

Thanks guys, between the lot of you I understand this a LOT better now.