An 8-year jump between post and reply.. that might be a record.
I have two comments that I'll add to the current question:
1. APS has been obsolete for over ten years. RA does not support or sell or provide it anymore. Even if you can run it on a DOS computer (or get it to run in a DOS shell in Windows) it will only support controllers built in its era, i.e. 1990-1995. Anything built in the past fifteen years or so, including all MicroLogix controllers, will be unsupported by APS.
2. RSLogix 500 "Micro Starter Lite" is available at no charge from the Allen-Bradley website. Go to AB.COM and search for "RSLogix 500 Free Download" and it's the second link.
The first link from that search is the RSLogix 500 product page, where you'll see the part number for the RSLogix 500 Starter Edition, which is the minimum you need to program an SLC-5/05 (which was mentioned earlier in this thread, eight years ago, so it's possible the most recent querent is thinking about modular SLC controllers).
RSLogix 500 Micro Starter Lite supports only the MicroLogix 1000 (1761-xxxx) and the MicroLogix 1100 (1763-xxxx) controllers. It does not support any modular SLC controllers or any other MicroLogix models.