If you have Nero vision express ( part of nero 6 full version not oem) you can create a dvd by simply importing your
DVD compliant mpeg2 files. There are several other cheap software
eg
http://www.ulead.co.uk/dmf/dmf_stand/features.htm
Ulead DVD Moviefactory and a host of other dvd creating software ( also called DVD authoring programs) are able to automate the process for you including creating a menu for chapters etc
You can use any quality of video as the source material tocreate a dvd as long as it has been encoded to dvd compliant mpeg2. For instance, you can create a dvd from mpeg1 vcd files, analogue sources( vhs) which have been digitised on capture to pc, these days even mjpegs and divx files, The quality on DVD will obviously reflect the quality of the source material but it will still play on a dvd as long as it is "convertable" to DVD compliant mpeg 2 which will ultimately end up as VOB file , the video aspect of a DVD structure.
You can put all your 10 mpegs of 2g on a DVD. A single layer o DVD-R /+R of 4.7G will comfortable take all your files a highest quality .