Hello,
It seems that you are unable to see the Shadow copy components as well as Exchange selections after installing hotfix 17 as well as reinstalling the remote agents after that. Did you reboot the remote server after installing the agents? If not, reboot the same and verify.
Are the selections not available at all or are they grayed out? Try to create user-defined selections and see if the selections appear. Here is the link for the doc describing the procedure:
Title: How to create a user-defined selection in Backup Exec 9.x and 10.0 for Windows Servers
http://support.veritas.com/docs/254193
Revert with details to the above questions if the issue persists.
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Regards.