If you're new to federal contracting, teaming with another business as a "subcontractor" is a great way to get your foot in the door in the federal government. The Internet is a great resource to locate opportunties to partner with other vendors.
In addition to SUB-Net, the following resources provide guidance for creating teaming arrangements and subcontracting:
Under a Contractor Team Arrangement (CTA), two or more GSA Schedule contractors work together, by complementing each other's capabilities, to offer a total solution to meet an ordering activity's requirement.
Pursuant to the Small Business Act, as amended by Public Law 95-507, large business prime contractors receiving federal contracts valued at more than $1 million for construction (more than $550,000 for all other contracts) are required to establish plans and goals for subcontracting with small business firms. This directory is a listing of GSA contractors with subcontracting plans and goals.