IT contractor
To be IT contractor
http://exchangeserverpro.com/so-you-want-to-be-an-it-contractor-read-on
IT Contract Rates / Self employed
Short Term IT Staffing Contract Rates
http://www.itstaff.state.nc.us/ConvenienceContracts/SuppStaff/CategoryRates.asp
Self-Employment- How to Set Hourly Rates When Self-Employed
http://www.salary.com/Articles/ArticleDetail.asp?part=par402