Wow there are loads.
If you just want a simple menu without too many refinements I would go with Nero Vision (
Nero 7 [Nero Vision 4]) which can be downloaded as part of the Nero Premium suite. A demo is available for free download, but there are restrictions on file sizes with the demo.
You could make better use of your money by buying a budget video editing program which also includes basic DVD authoring. Something like Pinnacle Studio 10 or Adobe Premiere Elements 3 will do the job, and you will find that you have much greater editing control than Windows MM allows.
If you do stick with MM, remember to export your finished movies as DV AVI format, as opposed to WMV. All DVD authoring programs have to compress and convert the movie into an MPEG2-based file format. WMV files are already compressed, and your finished DVD will be of poorer quality. You are better off giving the conversion software a good quality movie file to begin with.