Systems integrator start-up Cambridge Technology Partners Inc, Cambridge, Massachusetts, which is headed by former Concurrent Computer Corp boss James Sims, will be targeting customers that need to tie in recent Unix system acquisitions with existing proprietary investments: the firm, intially focusing on accounts that have bought Hewlett-Packard Co, NCR Corp and Unisys Corp Unix machines, aims to be running at annualised sales of $25m by the end of the year.