Try to capture your DV-AVI to a different hard drive rather than your system drive. Ideally you should have two separate hard drives in your PC.
If that's not possible, make sure you have defragged your hard drive. Also make sure you don't have any other programs running while you are capturing (transferring) your video. Disable virus scanners, screen savers, firewalls, internet connection etc. etc.
Try using WinDV to transfer your video footage instead of Nero. You can download it from:
http://windv.mourek.cz/ It's a very small program that doesn't use up much memory and is quite stable.
What speed is your hard drive? I have 7200rpm hard drives and never drop a frame when capturing DV-AVI footage from my miniDV/Digital 8 camcorder. Even if you have a 5400rpm hard drive you should still be able to have a perfect transfer, just make sure that you follow the tips in my first paragraph.