In what looks a decidedly unholy alliance, Cap Gemini Sogeti SA of Paris – with 29.9% of CAP Group Plc here, and Volmac NV of Utrecht, Netherlands, with between 8% and 9% of CAP, have agreed cross-shareholdings under which Cap Gemini will take 5% of the Volmac Software Groep, going public this week in Amsterdam – see page three, inside – and Volmac Holding BV, 35.3% holder in Volmac Software after the float, will take 5% of Cap Gemini.