PXE booting in routed environment

[thepl4yer]

Does anybody know how to achieve the following :

I have a VLANd network with a DHCP server running on VLAN 1 which is also running PXE as part of RIS.

I have a client in VLAN 2 which I require to PXE boot into RDP(Altiris) which is running PXE services on VLAN2.

I can get the client in 2 to get an IP address from the DHCP server in 1 using IP helper. However, how can I ensure that it boots off the PXE server back in VLAN 1 (i.e. Altiris and not RIS). Turning off the RIS really isn't an option (if I do this, everything works fine) and I don't really want a seperate DHCP server in VLAN 2. Is there a way to control which PXE server a client in a particular subnet boots off ???

Any ideas ?


Thanks