McNabb started GeeksOnTime as a single mom in 2001. Each year, the company has expanded to other states and doubled revenue -- all self-financed. The nationwide network of computer technicians can help with everything from emergency data recovery to onsite repairs and upgrades -- 24 hours a day.

Age: 29
Location: Lynden, Wash.
Revenue: $1 million
Employees: 59 employees (plus 1,100 contractors)