I'm really unsure of what the problem was but now seems resolved.
Sorry there is no documentation that I could find. The website where I initially found this dll years ago is no longer there. I searched through all my old files and was unable to find any documentation or the source code.
The issue was whenever calling this dll after i updated to mirc v7.64 from 7.63 nothing happened. I placed the old version back in and it would work as before. I tried this on various scripts i have with the same result.
Today I decided to try again and see if i could derive any more information I could pass on.
Imagine my surprise when it worked perfectly. I have no explanation why this would be the case. I again tried with all the same scripts as before and they all worked. I apologize for wasting the time of anyone that was kind enough to look into this. I am pretty well versed in this world but am at a loss as to why it wouldn't work and why now that it does.
Thank you for your time.
