My computers are well secured with antivirus, firewall and assorted other protections but I am considering trying Sandboxie. One thing I'd like to understand. If I download a file into the Sandbox (i.e. .jpeg, mpeg, .avi, .exe), except for scanning with antivirus and antispyware, how do I confirm there is no malware in the file so I can move it out of the Sandbox and use it? Is it feasible to just leave it in the Sandbox? Any clarification or recommendations would be appreciated.