no more a problem
for people that will look in the future for this:
run snmpconfig without importing any files,
create a snmpd.conf
do not touch the agent settings, just set the basics as the public account, admin contact data, set snmpv2.1 public account for community, accessible only through localhost (security is first priority)
run cfgmaker with wanted parameters (man cfgmaker) and set destination to /etc/mrtg.cfg (or at least that is on debian), set if is not set from the package a cron job for mrtg(see docs) and you are set...
If anybody wants to see my graphs my sexy penguin