Sally,
One relatively easy way to do this in Photoshop is to create your business card image and then use the Picture Package tool to build up a sheet of cards. However, there isn’t likely a package provided that would suit your needs, so you’d need to create a custom layout that does.
If this helps, I have already done such a task once before, creating a 7×10-inch layout of 10 2×3.5-inch cards, with no gutters between the cards. That is, you’d need to cleanly cut them apart since there is no room for mistakes. You can save the layout from <
http://jazzdiver.com/photoshop/10BusinessCards.txt> and then move the file to the Presets/Layouts folder under your Photoshop installation path. For example, mine is D:\Adobe\Photoshop 7.0\Presets\Layouts
To use the new layout, go to File > Automate > Picture Package and choose the 7.0 x 10.0 inch page size. Most likely you have no other layouts using this page size, so the Layout should already be correctly shown as (10)2×3.5. Browse to your source file and create your picture package with this layout, print, cut, and you’re done. 🙂
Hope that helps,
Daryl