How to change the image size on product page?

[groggory]

I like a width of 150 on my images throughout my site, but I would like an image with width 250 on my product page. How would I do this? I realize I would need to put a 250 wide image in my thumbs directory, but any tips on how to go about this?

Thanks.

[bkpie]

I used dynamic mo pics and have my settings in config to use numbers in the thumbs and big image directory. In order to get it to show in the thumbs I also had to put one in the big image folder both with suffix _1 so
you would have 150 width in image folder widget.gif then the your 250 image in thumbs folder saved as widget.gif_1 and in big images whatever size you want(I used 300) when clicked on also saved as widget.gif_1 If you want to see how I used it on my one site in progress you can pm me since I am not ready to post the site here yet.