Need free crystal report viewer that will prompt for parameters

There are a number of options listed here http://kenhamady.com/bookmarks.html#viewers

Do any allow you to work with dynamic parameters?

I don't think you'll find a free viewer that does that.

I don't know, you'll need to take a look yourself.

Have you considered writing a viewer of your own.

The code is not that difficult if you choose to use the Crystal prompting screen for the parameters

mlmcc

How many reports do you have ?

20-30 reports that are actively run. We have been using Reportal as  web based distribution for these reports which handles the database authentication and prompts for parameters but it has become unreliable. These types of solutions are very expensive and we do not have the funds at the moment to renew with Reportal to get to a more current/possibly more reliable version or for similar alternate solutions. I am trying to find a cheap/free way for our users to run the reports, to not have to authenticate against the DB and to be able to interact with dynamic parameters. I realize now that FREE is not possible. Are there any more affordable options out there that maybe I have not run across?