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Both of them load well on my eMac. (fairly old by most standards.) Not sure what the problem could be.
 
the first one was slow for me on firefox.

I can tell you why as well. They done in flash and theres no need for it apart from that silly animation (which I would have left because of before it had finished as theres no skip) at the beginning on the visualtherapysystems site.

Javascript can do the pop up windows in the second site although I will admit that seemed to be better optimised than the other one.
 
First loaded in about 4 seconds, the 2nd in about 2 seconds. You may want to find out what version of Flash the person has installed as well as what browser and version.
 
Both load on my iMac in Safari 4 Public Beta, and Firefox 3.0

The slowness of the download is probably due to embedding a large number of images on the timeline.
(everything in the site is loaded up front before the swf is displayed.)

You might consider using a progress indicator (or "preloader"), so the user can see the progress of the download.

Another solution is to load each page as a separate SWF, instead of combining everything into a single large SWF.
This would reduce the download significantly.
It also makes the site easier to manage.
 
Loaded quickly on my powerbook 17 with firefox 3.0. What programme did you use to design this, and did it take long?
 
They load but i can not read any of your content as my text ready can't pick it up with they way you have set up flash and it on the first link certainly it is way to low contrast.
 
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