Accounting Resources 

http://accounting.pro2net.com/
"Pro2Net.com offers limited free access to resources for accounting, financial services, human resources, insurance and legal professionals.  Fees apply for some products and services."

http://accounting.rutgers.edu/
"Accounting Web the Largest Accounting Web Site in the Internet!"
 Sponsored by The State University of New Jersey-Rutgers.

http://www.aicpa.org/nolimits/index.htm
American Institute of Certified Public Accountants offers a web page for students.

http://www.aicpa.org/members/div/ethics/index.htm
The Professional Ethics Division's mission is to (a) develop and maintain standards of ethics and effectively enforce such standards, thereby ensuring that the public interest is protected; (b) increase the public awareness of the value of the CPA; and (c) provide timely and quality guidance to enable members to be the premier value providers in their fields.

http://www.fourmilab.ch/ustax/ustax.html
U.S. Tax Code Online provides access to the complete text of the United States Internal Revenue Code.

http://www.irs.ustreas.gov/
U.S. Treasury Departments web site, download tax forms and information.

http://www.revenue.state.pa.us/
Pennsylvania Department of Revenue.

http://www.sec.gov/
U.S. Securities and Exchange Commission web site provides information for accountants, investors, and small business operators.

http://www.taxsites.com/
Tax and accounting sites directory from About.com.