Gucci Group reports first quarter revenues of $ 530 million - Gucci Division first quarter revenues up 27% to $ 342.9 million - Goodwill and trademark amortization period reduced from 40 to 20 years reflecting SEC guidance - Restructuring charges in first quarter of $ 32 million net of tax - Management comfortable with full year net income per share of $ 3.10 after impact of accelerated amortization, restructuring charges and recently announced acquisitions