You say that the files are too big to fit onto the DVD - I am guessing that these are AVI files?
Once you have authored them (via DVD editing software (e.g. Studio 8) or conversion software (e.g. TMPGEnc) the "altered files sit in a folder named VIDEO_TS (created by the software) these files are very much smaller and readable by your DVD player.
Using Nero to burn, just drag the VIDEO_TS contents into the corresponding folder supplied by Nero and thats it!
Warning - the conversion from AVI to VOB (the files in the VIDEO_TS folder) takes time and resources......many hours sometimes. Shut down anything you don't NEED running and forget the idea of "Multi-tasking" during the conversion
This thread is now locked and can not be replied to.