I work for an environmental consultanting firm, mold is not my specialty but I have had lengthy discussions on the subject with IAQ (indoor air quality) specialist .
In my state their currently are no regulations regarding mold remediation.
It is impossible to eliminate mold spores , they can be found everywhere indoors/outdoors. When there is mold growth there is an underlying issue that needs to be addressed prior to remediation. mold requires the right environment to thrive. Usually what spawns the growth is a moisture problem i.e, leaking roof, walls, pipes. its these contributing factors need to be eliminated.
There are also health risks associated with remediating yourself without proper personal protective equipment.
we work with homeowners/RE agents to help identify the strains and develop a remediation plan. Often these clients have a tight budget and we are able to work with them to keep cost to a minimum. Look in you phone book and contact some companies to see if they can work with you.
the epa has a lot of info available too
http://www.epa.gov/mold/