Sisterbea,
Some general advice:
Don't delete a file until you know what it is. Instead, move it to another directory or preferably quarantine it (move it to the
Virus Chest). This way you will have the file so that you can have it analyzed if necessary, or you can restore it if it turns out to be crucial to your computer's operation.
If you must delete it, make sure you can replace it with a copy from a backup or from your installation disks. Of course, if you know what application the file is associated with, and if you decide you can do without it, by all means delete the file and uninstall the application.
Use an online scanner to confirm the presence of the virus. You may have gotten a false positive -- well with some lesser AV program but not with Alwil's fine product

.
Consult newsgroups for more information. Start with the
viruses and worms forum right here. Search the web for instructions explaining how to clean the infection from your computer. You may have to remove it manually, but you may also find a utility that will do it automagically.
Regards,
Hornus