The only application packaging product in the Symantec stable is Wise Package Studio V8. This is an enterprise level tool and not cheap to buy, but is also suffering from development lag.
On the open market, the most commonly used enterprise packaging toolset is now Installshield Adminstudio. This is maintained pretty regularly and is Windows 7 compatible, and now includes a capture engine for true 64 bit operation. Again, this tool is not cheap, but does provide an end to end solution.
There are other MSI packaging solutions around, at various prices, and of course there is the free version of WinInstall LE that came on the Windows 2000 CD. Just enter MSI PACKAGING TOOLS into google, and go from there.