finalising my disc's?

I have a panasonic DMR EZ45V dvd/video recorder, i purchased it 2 years ago. I've uploaded my home videos (via dv tape) from a camcorder onto this machine...and recorded it onto the hard drive with my disc in it..the disc has not been finalised ....as my 2 year old son has knackered the disc drive and I'm wanting to finalise the recording on this disc so that i can play it another dvd player ...How can i achieve this?? pls help...as the recordings are of my new born, before he knackered the disc drive....