I used a Hauppage PVR-150 to transfer some laserdiscs to DVD, it worked well and the bunded software is good enough for minor editing and then creating simple DVDs with basic menus and chapter stops.
If you don't need to edit the tapes, the easiest method is to just buy a standalone DVD recorder for under $100 (Liteon, iLo, etc.) since you just push record on the DVD, play on the VHS and go do something else for awhile.