Security Incidents: Help with compromised linux box.

[Anthony Coley <beta_1_0 () HOTMAIL COM>]

My Linux box was compromised a couple of weeks ago.  Once I noticed this I removed it from the Internet
and began trying to figure out what this person did.  I've found a program that was hidden in /dev/chr/stachel/
and I want to know if someone would be willing to take a look at what I've found to help me identify what this 
person did?  I've tar-ed the directory and it's about 650k, so it small.

If this is not the correct forum for this please advise.

Thanks in advance,

Anthony