Best Free DVD burning program

I'm at my parent's house for a couple of days and I need to burn a few DVDs, unfortunately their shit Dell comp came with Roxio software, and it gives me errors EVERY time I try to burn something to DVD,usually 1/2 way through a burn, no matter what type of DVD media I use (YES it is a DVD burner). It does, however burn CDs ok. 

So I am in need of a Free burning software, prefereably easy to use so my parents could use it too, and it'd be great if it let me copy DVDs (data) directly from a regular DVD drive without having to copy the data to the hard-drive first (Sonic RecordNow has given me shit on this before).

So what are your suggestions? Thanks in advance.

>>2

I guess I should have said I was looking for something for Windows XP.  But thanks anyway. Any other suggestions?