It sounds to me that you would be better off getting a settop DVD recorder with HDD and firewire If it is just for archiving MiniDV tapes to DVD.
The idea of transferring to PC and creating a DVD suggests that editing may be desired
For simple editing ,ie trim ect, you can do that on the HDD of a settop recorder before burning to disc, if you want to.
Of course with a settop you can record directly to disc anyway even if it has an HDD
As Mark has stated , you can import with WMM ( taking care to record as DV AVI, NOT wmv; which it defaults to)
The XP version does not output to mpeg2 or have any DVD arthoring abilities.
The suggested MovieFactory ( for £29) is an elegant solution
However if you have Nero ( not Express or OEM) on your system, Nero Vision is also capable, The version that comes with Nero 7 and Nero 8 even more so.
See the FAQ on use of WMM if you would prefer to see how much you can do with it. I have linked to WMM enthusiast sites..
Depending on specific needs, You can have
both a settop recorder
and PC
I dont know how many tapes you have but be aware that DV takes 13Gb of space for one hour . Certainly you can wipe that off once you make your DVD .

Also there is an element of time involved in encoding DV AVI from the tape in the camcorder to mpeg2 which is the format in which it will be on a DVD. By using a settop recorder this will be done "on the fly" in real time