Before you can install any Adobe CS3 application, you'll need to find the serial number that came with the suite. Adobe CS3 requires that you enter a unique serial number before using it.
If you've lost your serial number, there may be a way to find it as long as Adobe CS3 is still installed. You might be able to find your Adobe CS3 serial number if you've uninstalled the suite but only if the serial number information was left in the Windows Registry.
The Adobe CS3 serial number is actually more of a product key than a serial number but the terms are often used interchangeably.
Using a free product key finder program would certainly be the easiest way to find your unique Adobe CS3 serial number. Product key finder programs automatically search your computer for the product keys and serial numbers that your software programs store in the registry.
If you knew the exact registry key that stored your Adobe CS3 serial number you could find it manually but that information is usually hard to come by.
Most product key finder programs are designed to find serial numbers and product keys for operating systems like Windows XP or Windows Vista but some of them find serial numbers for several other programs too - programs like Adobe CS3.
I've reviewed several product key finders and have confirmed that LicenseCrawler will find your Adobe CS3 key.
If for some reason LiceseCrawler dose not find your Adobe CS3 serial number, give some of the other key finder programs a try from my Free Product Keyfinder Programs list. Be sure to let me know what programs did or did not find your Adobe CS3 serial so I can keep this page updated.
Important: You may have come across Adobe CS3 keygen programs or other kinds of Adobe CS3 cracks but keep in mind that these are not legal ways of obtaining serial numbers or product keys. The only legal way of installing this program is by using a valid Adobe CS3 serial number obtained through a legal purchase of the software.
There are several Adobe CS3 software suites that package different combinations of the various CS3 applications. Some of the more popular Adobe CS3 apps include Adobe InDesign CS3, Adobe Illustrator CS3, Adobe Photoshop CS3, Adobe Flash CS3, Adobe Fireworks CS3 and more.