As its already suggested, you just have to change the webserver port from 8443 to something else... To do so, you have to re run the management server configuration wizard and change the port number after choosing "Reconfigure my site"..
You actually don't have to worry about the Sybase port 2638, only dbsrv9.exe will listen on it.. If you are stull concerned, you can change that too.. But you just cannot change it in the Management server configuarion wizard.. you will have to first change in the registry..
* Stop Symantec Embedded database service...
* Navigate to HKLM\System\CurrentControSet\Services\ASANY_Sem5
Edit the parameters key and at the end you will find the port TCP port = 2638, change it to desired port..
* Close down the registry and start back the Embedded database service and run thorugh the management server configuration wizard... and now you can change both the 8443 and 2638 .. :)
I would also like you to give us one small information... What do you see or what happens when you right-click and browse 'Reporting' under symantec webserver in the IIS?
Cheers,
Visu.