REGARDING THE WINDOWS MESSAGE WHEN RUNNING CC3 AND OTHER PROGRAMS.
To disable the warning in XP start the Group Policy Editor (Start > Run, type)
1. -gpedit.msc- and press OK) and go to:
2. -User Configuration > Administrative Templates > Windows Components >
Attachment Manager- then set -Inclusion list for low file types- to
Enabled and enter the file types you don’t want to be warned about in
the box (for example: .exe).