Just a quick follow-up on this thread.
I signed up for a Silver Host reseller account and made a request that day for a Zend Optimizer install. The install was made within 36 hours.
I unfortunately failed to request an install of the version my script required; the install that was made would not work with my script, so I made another request for the correct Zend Optimizer version.
I hated to make the second request, especially since I didn't make it clear what version I needed initially.
Instead of being scorned and fined for putting them through unnecessary trouble

, I was told it would be no problem to do an uninstall and an install of the correct version.
The install was made the following day.
I'm new here, but already I'm overwhelmed with the professionalism, courtesy, and overall fantastic support.
I also think it speaks volumes that JodoHost has this forum.
Thank you!