PowerConnect 6248 & Cisco 3560 Switch trunk connection

We are upgrading our production switches from a set of Cisco 2960 L2 to the Dell Powerconnect 6248's.  Right now the Cisco 2960 swithches are connected to a set of Cisco WS-C3560V2-24TS-S   L3 switches via trunks ( 2 trunks from switch to switch via ports 23 and 24). 

We are only running vlan 1 and the code for ports 23 and 24 on both switches look like this:

Interface gigabit ethernet 0/23

switchport trunk encapsulation dot1q

switchport mode trunk

!

Interface gigabit ethernet 0/24

switchport trunk encapsulation dot1q

switchport mode trunk

I am looking for the best way to trunk the Powerconnect 6248's to the Cisco WS-C3560V2-48TS-S  's using the same ports.  I am having a problem with the "encapsulation dot1q" aspect on the powerconnects.  Any advise would be greatly appreciated.

page 31 from here has the commands to use