i'm using a dell computer with gcc-4240n and when i've bought it i had already roxio softwere preinstalled and the burner uses that drivers, so i think it's better if you find roxio stuff (min.5.xxx as lower versions do not support the driver) and later it will work well, at least mine does.
hmm.. have you engounter anyproblem using nero on this Rw/dvd gcc 4240n to burn cds??
although i have updated the nero to 5.5.10. the nero still doesnt support the burner.. but according to the nero site...
nero already support the burnner since the release 126.96.36.199i...