ive gone online and searched for forms but its very confusing.thanks for all the help in advance

Have you looked at the websites for the three states? Search on (state name) tax. I found these, for IL, quickly - you can look up the other two states.sales tax: see http://www.revenue.state.il.us/ElectronicServices/Businesses/index.htmincome tax: see http://www.revenue.state.il.us/ElectronicServices/Individuals/index.htm