noobie VLAN - PC 6024 and Cisco 3548

We have a WAN separating Site 1 (192.168.1.0/24), Site 2 (192.168.2.0/24) and Site 3 (192.168.3.0/24) using Cisco 2600 series routers.  Locally, the site LAN's are flat.  Site 3 is maxing out.  There, we have the router (192.168.3.1), a server farm (dhcp @ 192.168.3.20) connected to PC 6024 (192.168.3.10) and 5 Cisco 3548’s (192.168.3.11-15). 

I would like to separate each 3548 into a separate VLAN (192.168.31.0/24 – 192.168.35.0/24) with a dhcp scope for each and routing by the PC 6024.  Access to all subnets is needed mainly due to firewall/Internet and some host servers at Site 1.  Re-subnetting is not feasible for a variety of reasons.

I have an extra 3548 connected to the 6024 I’ve been working on.  I know if I can get one connected and working, replicating across LAN and Cisco 2600 setup should be fairly straightforward.  VLAN31 on 3548 won’t stay up and dhcp isn’t getting through.  If I set static IP on PC connected to 3548 port 1, I can ping PC from 6024 and the 6024 (both 192.168.31.1 and 192.168.3.10) from PC...but nothing further.  No changes to Cisco 2600 have been made.  Below are the configs.

Has anyone done this before?  This just doesn't "seem" like it should be this hard.

Thanks in advance.
EB

PC 26024
=====================================================================
Router Configuration
-----------------------------

interface ethernet g21
switchport mode trunk
exit
vlan database
vlan 30
exit
interface ethernet g21
switchport trunk allowed vlan add 31
exit
interface vlan 1
ip address 192.168.3.10 255.255.255.0
exit
interface vlan 31
ip address 192.168.31.1 255.255.255.0
exit
ip dhcp relay address 192.168.3.20
ip dhcp relay enable
aaa authentication login default local
username mine password zzzzzzzzzzzzzzzzzzzzzzzzzz level 15 encrypted
=====================================================================

Cisco 3548
=====================================================================
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname SW-VLAN31
!
enable secret 5 zzzzzzzzzzzzzzzzzzzzzzzz
!
!
!
!
!
!
ip subnet-zero
!
!
!
interface FastEthernet0/1
 switchport access vlan 31
!
interface FastEthernet0/2
!
……..
!
interface FastEthernet0/48
!
interface GigabitEthernet0/1
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,31,1002-1005
 switchport mode trunk
!
interface GigabitEthernet0/2
!
interface VLAN1
 ip address 192.168.30.10 255.255.255.0
 no ip directed-broadcast
 no ip route-cache
!
interface VLAN31
 no ip directed-broadcast
 no ip route-cache
 shutdown
!
ip default-gateway 192.168.30.1
!
line con 0
 exec-timeout 0 0
 transport input none
 stopbits 1
line vty 0 4
 password zz
 login
line vty 5 15
 password zz
 login
!
End
=====================================================================