Ok,

The problem is getting poudy big. I tried to populate the sheet one by one. I still didn't apply the format. The problem is that I have about 10 fields and more then 2000 rows. It's slow!!!!

i use the cell propery of oexcel to populate it. I minimize the Excel windows and I win some performance point but it's still slow. very slow. I uses a pIII at 733 and 512 ram. Woudl that be a problem?

Thanks,
ionut