Because F-Prot runs in the background all the time, you should not need to run it yourself frequently. However, if you suspect that your computer is infected with a virus, you should run F-Prot manually. You should also manually scan floppy disks. If you have created shortcuts on your desktop for scanning floppy drives and hard drives, you can simply double-click on them to start the appropriate scan.
If you do not have a shortcut or if you only want to scan particular files, you can start a scan by selecting Start, Programs, F-Prot Antivirus, and then OnDemand Scanner. Click the OnDemand Scanner button, select the files to scan, and then click Scan Now.