Machine compromised

[deltamail]

Hello,
My machine is compromised. Can anyone guide me how to fix it.
I ran rootcheck it gives me

[FAILED]: Process '8921' hidden from ps. Possible trojaned version installed.
[FAILED]: Excessive number of hidden processes. It maybe a false-positive or something really bad is going on.

How can I unhide the process?

When I start the Iptables it blocks all the ports and I can't even SSH to server.
I tried installing the apf but i get following error

iptables v1.2.11: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)

Please suggest.
Thanks.

 

[marsd]

The 'I'm rooted three step'.

Remove this machine from any network.
Boot from knoppix or some purpose built forensics
bootable.
Do forensics analysis and follow up.

HTH