State of Maryland: http://business.marylandtaxes.com/default.asp

State of D.C.: http://brc.dc.gov/index.asp

State of Virginia: http://www.tax.virginia.gov/

Chamber of Commerce:

Maryland: http://www.mdchamber.org/

Montgomery County: http://www.montgomerycountychamber.com/

Rockville: http://www.rockvillechamber.org/

Gaithersburg/Germantown: http://www.ggchamber.org/

Silver Spring: http://www.silverspringchamber.com/

Small Business Resources:

All Business:  www.allbusiness.com

GoSmallBiz: www.gosmallbiz.com

It'sSimpleBiz: www.itssimple.biz/biz_tools

Small Business Hand Book: www.quickmba.com