When you say your pc neither reads nor sees your disc, does that mean you did burn it using a DVD Home recorder?
If so, what recording format did you use?
Assuming so, the disc was "supposed" to work in your pc, but to edit it you need to use the VR format (and don't know if it works with +RW) and a editing package that supports importing the files and editing MPEG2 files.
By the specs of your combi its possible it doesn't support +R(RW) discs and either it is possible you update the firmware and the new version does, or you can have a "stupid" dirve as one I've got (made by Samsung) that belongs to the only series Samsung didn't provide a firmware to support +R(RW).
In this case, the only solution (and here I admit you did burn the disc in another pc) is that you change the bitsetting, and your drive can see the disc as a DVD-ROM.
This depends on the recording drive model/firmware and on the software you use to burn the disc.