Where do I specify SNMP version to use?

[brian obendorfer]

I am configuring hobbit for mulitple networks that run different SNMP 
versions.  One network is SNMP version 1 the other network is SNMP version 
2c.   Currently the network running SNMPver1 is working perfectly however I 
am getting SNMP authentication failures on my Cisco devices that run SNMP 
ver2c.

Is there a config file that I can manipulate to monitor both networks and 
not recevie the authentication failures on my cisco switches running SNMP 
ver2c?