SSIS Package Permissions 2005 and 2008

Role	Read action	Write action
db_dtsadmin	Enumerate own packages.	Import packages.
or	Enumerate all packages.	Delete own packages.
sysadmin	View own packages.	Delete all packages.
	View all packages.	Change own package roles.
	Execute own packages.	Change all package roles.
	Execute all packages.
	Export own packages.
	Export all packages.
	Execute all packages in SQL Server Agent.
db_dtsltduser	Enumerate own packages.	Import packages.
	Enumerate all packages.	Delete own packages.
	View own packages.	Change own package roles.
	Execute own packages.
	Export own packages.
db_dtsoperator	Enumerate all packages.	None
	View all packages.
	Execute all packages.
	Export all packages.
	Execute all packages in SQL Server Agent.
Windows administrators	View execution details of all running packages.	Stop all currently running packages.

In SQL Server 2008 these 3 Database Roles are now named db_ssisltduser, db_ssisoperator, and db_ssisadmin
 MSDN Integration Services Roles (2008)

Role	Read action	Write action
db_ssisadmin	Enumerate own packages.	Import packages.
or	Enumerate all packages.	Delete own packages.
sysadmin	View own packages.	Delete all packages.
	View all packages.	Change own package roles.
	Execute own packages.	Change all package roles.
	Execute all packages.	Bitmap
	Export own packages.
	Export all packages.
	Execute all packages in SQL Server Agent.
db_ssisltduser	Enumerate own packages.	Import packages.
	Enumerate all packages.	Delete own packages.
	View own packages.	Change own package roles.
	Execute own packages.
	Export own packages.
db_ssisoperator	Enumerate all packages.	None
	View all packages.
	Execute all packages.
	Export all packages.
	Execute all packages in SQL Server Agent.
Windows administrators	View execution details of all running packages.	Stop all currently running packages