Its called msx_ksr.dll but i dont know if you can still find it on the internet and i dont know if it worth the trouble, maybe you should ask for a programmer to create one for you or to help you implement a method of autotrading, or even better you should consider another platform for this purpose cause metastock unfortunately needs a lot of improvements even a completly rewrite.
If u really want that dll i will give it to you just send me your e-mail.

*PP
www.draculasystems.com