To do it in PC suite you seem to need to backup N95 to outlook etc with Nokia PC Suite, then sync back from outlook to i8510 with Samsung PC Suite
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Nokia 3310 > Nokia N-Gage > Sony Ericcson K700i > Motorola E1000 (ugh)> Nokia N80 > Nokia N95 > Samsung Omnia i900 (no thanks) > Samsung i8510
I used PC Suite in the end... didn;t have to go through any special approach though. Opened nokia pc suite, backed up nokia contacts and calendar entries... Opened samsung pc "studio", restored from nokia backups... job done...