Bace.338 is a harmless DOS virus. It is memory resident. It hooks DOS Int 21h and infects EXE files on their execution. The virus doesn't have any payload.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.