I think you need a special sun keyboard and monitor if you want to use it directly.
How good are you with UNIX? It'll have a serial port or two on the back, which I think will be of the same type as Macs (round, RS422), so you can use any olde Mac and ZTerm to connect via serial port (it should default to serial port if there isn't a keyboard attached when you boot it). You should be able to install Solaris and then move in via X forwarding over SSH, but it'll be a little hairy and involve a lot of reading if you haven't done it before..!

Click to expand...