Here are some useful and informative sites that might be of further interest:
BizBuySell - National business listings website
Business Book Press - Resource center for buying, selling or valuing businesses
BusinessesForSale.com - National business listings website
BusinessLaw.gov - new website designed to help small businesses find, understand and comply with federal, state and local laws and regulations that impact their operations.
Buy A Business/Sell A Business - Free business listings and broker services
Colorado Association of Business Intermediaries (CABI) - Statewide Association of Business Brokers with Colorado-specific listings
Colorado Chambers of Commerce - Statewide Chambers of Commerce
Colorado Lending Source - Private, community-based, non-profit economic development corporation that assists small business owners
Colorado Secretary of State - Doing business in Colorado
Denver Post - Denver newspaper
GlobalBX - GlobalBX is a free business for sale exchange connecting business buyers, sellers, and lenders. Search over 32,631 businesses and franchises for sale. You can find a business broker, compare rates and get a business loan, or contact business experts for help on all aspects of entrepreneurship and business ownership.
Google - Google searches more sites more quickly
International Business Brokers Association (IBBA) - The world's largest organization of business brokers
MerchantLoans.com - MerchantLoans.com provides loans of up to $1M to small businesses in as little as 72 hours with no application fees
Minority Business Development Agency - Information on resources available for minority-owned businesses
The National Women's Business Council (NWBC) - resource for policymakers, women business owners, the press and others interested in women's entrepreneurship
Office of Women's Business Ownership - An SBA program offering training and programs to promote growth of women-owned businesses
Quicken Loan Calculator - Calculate principal, interest, term payment and amortization
SCORE - Counselors to America's Small Businesses (1200 e-mail counselors who answer questions online)
Seigneur Gustafson - Valuation and tax experts
Small Business Administration - Lots of information about starting, purchasing or expanding a business
State of Colorado - Official state website
United States Patent and Trademark Office - Apply for patents and trademarks
Yahoo - The most essential global Internet service for consumers and businesses