Microsoft Excel itself can open and view CSV files, and you can then simply save them as Excel native .xls files for working with the data or sending to other people.
There's more info here:
http://office.microsoft.com/training/training.aspx?AssetID=RC011801181033&CTT=6&Origin=RP011801171033
y en espanol:
http://office.microsoft.com/es-es/assistance/HP052001573082.aspx
There's more info here:
http://office.microsoft.com/training/training.aspx?AssetID=RC011801181033&CTT=6&Origin=RP011801171033
y en espanol:
http://office.microsoft.com/es-es/assistance/HP052001573082.aspx