you could try a beta or use what i use for general data burning which is ImgBurn (www.imgburn.com) which i consider to be the best software for general data burning and best of all it's free. ('MODE > BUILD' is typically what you will want to use when burning random files on your PC to a DVD recordable)
if you want to try something with a little more user friendly interface... then i would give CDBurnerXP (http://cdburnerxp.se/) a try. (this is what i would recommend for AUDIO CD's if you burn those, but if all you do is burn DVD related stuff then i would recommend ImgBurn although CDBurnerXP will work for DVD's to)
p.s. i am not the only person who uses ImgBurn either as it appears most of the people here are big fans of that program for general data burning.
ImgBurn will also work fine with Windows 7 x64 (64bit) which is what i got myself.