Is there an easier way...

to convert a folder of images to 4x6 and 72ppi? It's for an online gallery. What I did was use Image Processor in CS2 where I selected the folder of images to process. I then select the file type, jpeg, and resize to fit 288x432, however, it doesn't allow me to change the resolution so I don't end up w/ a 4x6. I was hoping there was an easier way than to go into every single image and change it to 72ppi. I suppose I could make an action that can be used in image processor??

Why would it matter what ppi it says it is? So long as it has the right number of pixels it rarely makes a difference.

The ppi (or dpi) tag has relevence only for printing. With an on-line gallery the size of the image as seen on a monitor is determined by the ppi of the monitor and the pixel size of the image. In the past, when monitor resolution was fixed, the standard for monitors was indeed 72 ppi, but today, since it is easily user changed, most people have their monitors set somewhere between 90 - 110. Since you can't know exactly what an individual viewer's screen will show, the best you can do is choose a size that will work well for most people, like 400x600 or 500x750. This is why most photo hosting sites will give viewers a choice of sizes at which they can see the image.
Elie

These two images are both 300 x 300 pixels.
One is saved at 1PPI.
The other is saved at 999PPI.
Can you tell the difference?

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The one on the left is a tad softer, but really not much difference.

Because I want to keep it a low resolution (72) and a small file size. When I use Image Processor, it keeps the resolution at 250, and a 4x6 at 250 end up w/ an 8MB file...to big for what I want to do. Maybe I'm missing something here???

Those two images are identical, pixel-for-pixel. Even the file size is exactly the same. I posted them to make the point that PPI is meaningless when viewed on a monitor, and nearly meaningless anywhere else.

To resize and save images for the web, resize it to the number of pixels you want (in this case it looks like you want 288 x 432). Then when you save as JPEG, select a compression that represents a reasonable compromise between file size and quality.

I think you need to read the responses to this thread more carefully, the answers are all here, especially what Curtis said.

The point that Curtis made is that his two images are exactly the same size. The point I tried to make is that there is no way you can guarantee that everybody in the world will see your images at a certain size. On my monitor a 288x432 image appears 3.15x4.7 inches because my monitor is 90ppi.

"When I use Image Processor, it keeps the resolution at 250, and a 4x6 at 250 end up w/ an 8MB file...to big for what I want to do. Maybe I'm missing something here"

It's too big because 250 x (4x6) = 1000x1500 pixels. Forget ppi resolution. File size is determined by the number of pixels and jpg compression. I'd suggest 400x600 and medium compression.
Elie