tunnelling through 2 servers

hi guys.  i'm unable to access my home server directly from my work station
due to a firewall.  i do have access to a unix server, and from there i can
ssh into my server from command line (ssh myhomeserver.com) but if its
possible i'd like to use putty.  i want to be able to tunnel my workstation
traffic to my home server, through the unix server, but haven't figured out
how.  

i've tried opening a putty session to the unix server then opening a second
putty session using the first as a proxy but it failed.  i've been able to
use putty as a proxy for other applications but it hasn't worked for me on
this.  when i launch the second putty session i get an error "server
unexpectedly closed network connection"  i get the same error from another
computer.  

any tutorials for how to daisy chain ssh connections?

kevin
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