how do i install freedos to my computer?

i have an intel bios ao2 pentium lll, and my operting disks are expired. i want to put in one of those free operating systems and i don't know how. i downloaded freedos to put in regarldess of what operating system i get, but i have no idea of how to put it in. the partition i created for it has to be formatted and i don't know the command to do this or know how to direct it to the correct partition to format. i have to reinstall 98 over and over again just to get in and create it and i hope this doesn't damage my computer. where are specific instructions on how to install freedos without an operating system and without being able to get to dos prompt from bios ao2? I hope someone can help with this.