Paper tray selecting?

[AnDY]

Hi everybody

Can you help me?I have problem with printig on a specific paper tray.
I have HP LaserJet 4100 PS printer on a network (JetDirect) and I have 2 paper trays - first is smaller second is bigger.I am trying to print on selected tray but it doesnt work it always take paper from the same - the smaller one. I downloaded newest driver but nothng diffrent happens.
I try to use option like: -o itray=tray2 .
I have CentOS 3.5 with installed cups from the distribution and I setup printers using redhat-config-printer utility.

I dont know what else I should try or what I am doing wrong.
Please help.

Thanks
AnDY