High Dynamic Range Images

Has anyone here any experience with exposure blending of multiple RAW
images to obtain a single image with "high dynamic range"?

I would be trying to do this with RAW images from a Nikon D50 on a 1.8
Ghz 17 inch iMac running 10.3.9 using Photoshop Elements 4 and
Photomatix 3 as the HDR software (works with 32 bit images).

The images are fantastic but I am wondering if my camera and computer
can handle this.

TIA

--
With or without religion, you would have good people doing
good things and evil people doing evil things. But for good
people to do evil things, that takes religion.

Steven Weinberg

There is a learning curve but the technique is not hard to learn. Results
are often less than what you might want.
Some images are better off being processed with overlapping layers and
selective use of masks rather than the HDR technique per se.
Your machine is a bit underpowered for processing large 32bit files but it
is doable. If you have the usual Mac with only 1gb RAM you should double
that RAM. The real world of the Mac OS, and Windows too, is that inadequate
RAM when processing large files can lead to system freezes if the OS is
desperate for RAM and accidentally tries to store different items in the
same space.
The usual Mac also has a woefully small hard drive so you should also obtain
an accessory USB/Firewire hard drive if you do not already have one. 32 bit
hdr files are large and eat up storage space.
Not to belabor the point but you have a Mac: underpowered, overpriced and
you have to deal with it. Your dollar will go much farther for software and
hardware if your next computer is a real computer.