Here is some information from the IRS. Please feel free to contact me for any additional help.
It is critical that you, the employer, correctly determine whether the individuals providing services are employees or independent contractors. Generally, you must withhold income taxes, withhold and pay Social Security and Medicare taxes, and pay unemployment tax on wages paid to an employee. You do not generally have to withhold or pay any taxes on payments to independent contractors.
Form 1099-MISC is most commonly used by payers to report payments made in the course of a trade or business to others for services.
If you paid someone who is not your employee, such as a subcontractor, attorney or accountant $600 or more for services provided during the year, a Form 1099-MISC needs to be completed, and a copy of 1099-MISC must be provided to the independent contractor by January 31of the year following payment. You must also send a copy of this form to the IRS by February 28 (although the form does not have to be sent to the IRS until March 31 if the business files the 1099s electronically, using the FIRE system).
Also note that independent contractors may have their own employees or may hire other independent contractors (subcontractors). In either case, they should be aware of their tax responsibilities, including filing and reporting requirements, for these workers.
The IRS has a great site with lots of information on the 1099
http://www.irs.gov/businesses/small/article/0,,id=179114,00.html
http://www.irs.gov/businesses/small/article/0,,id=99921,00.html
http://www.irs.gov/faqs/faq4-3.html
Good luck and I hope this information helped you. Contact me if you need more help.