Palm/MTX_II.A is a 'greeting card' Palm application dropped by MTX_II.A Windows virus. The Palm application itself is not malicious but it is dropped as a payload of MTX_II.A.
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.
Upon execution the Palm/MTX_II.A displays a following dialog containing greetings to other virus writers.
When user clicks ok button of the dialog the application displays a animation of random rectangles that resembles game of life.
Palm/MTX_II.A is not a virus and it does not no anything malicous to other palm applications or data. But as it is installed into Palm device without user permission it is treated as a trojan, and detected by F-Secure Anti-Virus and F-Secure Anti-Virus for Palm OS.