I purchased Photoshop back at version 6 and have purchasing just the upgrades ever since. When looking to free up some space on my hard drive, I noticed I have all these versions, 6 taking up 104mb, version 7 at 136mb, CS at 183mb, and CS2 at 217mb. Can I discard the old ones and keep just CS2, or will the program somehow need the older versions to operate the newer ones? I have all the old CD's but am superstitious about Adobe's copy protection and would hate to make a big time consuming mess just to save a few hundred megabytes of hard drive space.
Thanks to any computer guru who might offer advice.