dealing with >2GB .dv files

[Geoffrey Knauth]

I'm new to iMovie.  I used a product called Formac Studio TVR to take 
40 minutes of VHS and write it to my hard drive as a 7.5 GB .dv file.  
iMovie won't let me import the file because it's greater than 2 GB.  
What's the best way to split the file up without losing any frames?

I understand I can open the file with Quicktime Pro and move little 
start/stop markers and then copy/paste segments.  But there are no 
frame numbers listed, so I don't know if I would lose frames that way.  
What do other people do or use?

Thanks,
Geoffrey
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Geoffrey S. Knauth | http://knauth.org/gsk