Hi. Make the switchport on which the PC is connected member for several VLANs. The command syntax might look something like this:
switchport mode access
switchport access vlan 1
switchport access vlan 3
switchport access vlan 5
Now the workstation, that is connected on interface Fa0/1 is member of VLAN 1, 3 and 5. Since you use Cisco products you might wish to have a look at www.cisco.com.