Well there are limits to the amount of downloads you can install, and there is a DIFFERENT limit to the amount of .dll files you can use, and that limit is smaller.
To help with this, there are some combined .dll files available for download here at ZA that can replace many user made .dll files, allowing you to use more downloads at one time that require .dll files. You can find these .dll files
HERE, and each one should list the downloads they work for.
I do forget the specific numbers exactly though. Search around, they're definitely talked about elsewhere on this site, and I'll come back and give you the link if I find it myself. :wink:
EDIT: Zoocrazyman, I see we posted at the same time! wolfpakldr, I do believe those are the correct numbers that he lists, or at least very close. I think the amount of downloads you can have changes dependong on whether you have ZT1 CC or not.