Do you want it to trunk or just connect the two together (only one vlan on both switches)?
To trunk enter the following on both switches, under the correct interface.
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
[optional]
switchport access vlan
switchport trunk native vlan
switchport trunk allow vlan
If you just wanto connect the two together to extend the single vlan, all you need is a cross-over cable between the two.
