Routing between VLANs on a baystack 450-24T

In short the answer is no; the 450 is a layer 2 switch and can't route at OSI layer 3.

The Nortel 5510 is a 24 port switch that can do basic layer 3 routing but it's not cheap.

If you wanted to route between the VLANs a Cisco 26xx router might do the trick though it would depend on the traffic between the VLANs

Regards

Pete

other option is configure a workstation with two nics, one in each vlan and use the workstation as a router - simple, but it will work. If you want to get very fancy, you can use win2k and use IPSEC and create filters to allow or drop certain types of traffic