The file cch.7z.003 is part of a multi-segment 7-Zip archive that requires all parts, including cch.7z.001 , to be in the same folder for extraction. Once extracted, CCH software reporting is generated via ProSystem fx Practice Management's Report Writer, Axcess Tax's Office Manager, or the CCH Central Reporting module. For detailed, product-specific instructions, consult the CCH Support knowledge base. Using Report Writer - CCH Support - Tax & Accounting