Are you looking to run these as DTS packages on SQL 2008 or convert them to SSIS? I would recommend converting to SSIS if time permits.
For DTS support, check the following link:
http://msdn.microsoft.com/en-us/library/bb500440.aspx
For converting to SSIS, I have found it easier to just code them fresh using the DTS package as a reference. The utility provided with SQL server doesn't get everything. There are other utilities out there but I have not used them. Maybe someone else can help with that.
-Brian