AVR-Chat

Hi,

simple question, i want to use the SPI on the mega16 in DIL40.
Normally if i want a device to be master only i'd tie SS_not high.

Now, i'm kind of tight on pins already, so i would like to use SS_not as a  
digital IO pin, i just want to be sure i can do that (not wanting to make  
a faulty board).
Please tell me if SPI will work correctly without using this pin for it.

thanks

ST