Help with PS action - change ppi?

[Scam]

Quick question. I have an action that I use on my processed images that resizes them using 'fit image' and does a little sharpening. I use it to resize them to a 1024 box for uploading to Flickr/FB etc.

I've just realised that my action keeps the dpi/ppi confused: ) as 300 which is rather unnecessary. I want to change this to 72 but I'm having trouble doing it. If I record a new step using the 'image size' thing I seem to get blurry images. I don't think it recognises that I want the size of the image to stay the same (even if I put in 100 percent) and just change the ppi.

Can anyone help? Or maybe I should keep my images at 300ppi? What does everyone use for Flickr?

 

[Scam]

Hmn I think I got myself a bit confused. Doing the resizing within an action didn't seem to work. If I change the PPI manually and ensure the image size stays at 100% it obviously doesn't change anything as you say. My question then is, why do images off the web come in at 72ppi? I guess it doesn't matter but..