Mr Hand ,
. .just make sure you are using the most recent ver. of Quicktime , i'd guess
. . and the ^ Help ^ thingie above works pretty well these days
when u r on-line and actualy in the app., using it
alo'ha H T H ∞
Machine Name: PowerBook G4 17"
Machine Model: PowerBook5,1
CPU Type: PowerPC G4 (3.3)
Number Of CPUs: 1
CPU Speed: 1 GHz
L2 Cache (per CPU): 256 KB
L3 Cache (per CPU): 1 MB
Memory: 1 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.6.2f1

When you are finished editing in iMovie and you click on the drop down window "FILE" you will see "SHARE"
A window will open that list "EMAIL, HOMEPAGE, VIDEO CAMERA, iDVD, QUICKTIME, BLUETOOTH
Click on QUICKTIME
There will be a sentence which reads

Compress movie for... next to a drop down You options will be
eMAIL
WEB
WEB STREAMING
CD ROM
FULL QUALITY DV
a line and
EXPERT SETTINGS

Highlight "Expert settings"

Click on Share

A New window will open

"Save as" ...
Where you want to save it
and below will be two drop down windows and a Button
EXPORT
USE
The button is OPTIONS
Click on the window next to EXPORT Highlight Quicktime move.
with OPTIONS you can customize the Quicktime settings

Hit save and BOOM You're good to go you just saved your film as a QT Movie from iMovie