With NEC drives (and some NEC compatibles), you can use the binflash utility to set the booktype of your DVD+R, DVD+RW and DVD+R DL media to DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW and DVD+R-DL (I have never tried that, because I don't see any reason to do so apart from DVD-ROM bitsetting, as matth pointed out).
From the website:
The following command is used to set the default booktype for DVD+R to DVD-ROM:
C:\>necflash -setbt DVD+R DVD-ROM perm 1.0.0
For DVD+R, DVD+RW and DVD+R-DL you can set the booktype to DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW and DVD+R-DL. Instead of using perm you may also use temp if you just want to use the temporary settings that only last until the next drive reset. (This feature is not supported by every firmware)