Thank you so much for replying! I am following you on the dpi size of 300 and pixel size for the picture and that the dpi doesn't exist until printed... let me see if I got this right for a 5 x 7 card the pixel size would need to be 1500 x 2100 for 300 dpi correct?? Does that mean the card template sizes on that page are wrong??
Ok ,I have another question... this is what I did I opened a new blank image in PSP with the pixel size of 1000 x 1400 (zazzle card size template here) and set the ppi at 300 before I opened the new image, I created my card and saved it in that size and dpi in png format and then uploaded it. I was thinking that if I create my products in the size zazzle states on their page below in 300 dpi that they will print in great quality, since it says resolution size will be maintained and it will print at a higher resoltuion??? Am I reading that correctly? And is the 150 dpi formula on that help page for all items or just the apparel??
Zazzle Image Size help page<Cards
300ppi
* Greeting Card (vertical): 1000 x 1400 pixels = 5" x 7"
* Greeting Card (horizontal): 1400 x 1000 pixels = 7" x 5"
* Note Cards (vertical): 800 x 1120 pixels = 4" x 5.6"
* Note Cards (horizontal): 1120 x 800 pixels = 5.6" x 4"
If your image is smaller than the maximum sizes, there will be some extra "white space" that will not be printed.
If your image is bigger than the maximum sizes, it will automatically be scaled down to the maximum size. The resolution of the image will be maintained, so it will actually be printed at a higher resolution than the standard for the particular product being designed.