imovie storage

[Norm Lamoureux]

Hi all, 

I am working on four different projects in imovie. I
need to save three of them as I am continuously adding
more video. I have a PowerMac G4 with a 120 gig hard
drive. I am already down to under 20 gig. What would
be the best way to store these projects while still
having easy access? Do I need another hard drive?
Thank's in advance for your help.

Norm L.

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