After importing DTS package from SQL Server 2005 you may not see Connection Icons and tasks
To resolve this re-register DTS related DLL’s in C:\Program Files (x86)\Microsoft SQL Server\80\Tools\Binn Folder
DTSFFile.dll
DTSPkg.dll
dtsui.dll
CDWTasks.dll
DTSPump.dll
CustTask.dll
ctasksui.dll
Thanks
Karthick P.K