Ethernet Shield: Can I use pin 4 for me instead of Ethernet SD card?

I'm guessing the answer is no, and I can live with that.

I have an Ethernet shield and Arduino Duemilanove. I'm wondering if there is a way to make the Ethernet shield not use pin 4 (won't be needing SD card functionality) so that I can use it for something else. If it's literally hardwired to not let me turn it off, that's life. Maybe there's way to turn it off somewhere in the library? I'll start digging.

Thanks for any feedback in advance. :D