Figure out static IP address of machine on network

I have Debian squeeze machine physically connected to my network. This machine has static IP address which I don't know. It is not possible to connect monitor to this device. Only one possibility to connect to current machine is SSH.

My current network configuration in which my windows machine is running is 192.168.1.xxx/255.255.255.0. I know, that device's I'm trying to connect IP starts with 192.168. How to know my device's IP address? Is there any Linux tools to solve this problem?