Win32.Crypto is an interesting virus from technical point of view, but it's not spreading in the wild and thus not a cause of concern for the end users.
Crypto infects EXE and DLL files and spreads when these are exchanged between machines.
The most interesting part of the virus is that it encrypts data on the hard drive with real-time on-the-fly encryption. So, if you remove the virus, your data is left encrypted. Encryption is done with Microsoft's CryptoAPI.
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.