Just type 1000 CR & 1000SC in google search and you will get the link in the gmat club and/or other sites.
If you want this 1000CR, 1000SC & 1000RC in software form just download it from http://www.gmatter.biz
(the software name is gmatter 2.0.0). You need to register in the site to get the download access.
Download the software and follow the instructions. The questions will appear in the screen some what similar to the GMAT test pattern.
You need a broad band connection to download that as it will get stuck more often.
Best of luck.