Pre-Package Proposal: System_Batch / System_Schedule

Hello All, If something like this exists, then please let me know as ive been looking around for several hours now... I need to be able to schedule unix style 'at' jobs from within php, and so was considering making a package that could do this (unless one already exists...) I would hope that using the base Batch class we can manage different types of scheduled tasks, ie... cron, at, batch etc... and would also hope that windows utilities could be built as well (although not being familiar with windows i wouldn't be writing these....) At the moment i see the at components scheduling working as follows... 1. The instance is supplied with jobs and the time to go out in an array or text based string. 2. a temporary file is built so that we can use the -f 'at' option. 3. A pear System_Command call is made to the at command and specifying the -f arg to the temporary file created. It would also provide methods for viewing the current queues etc... There are a few problems that I can see that could become of this however. The job would be registered as whatever user php was running as (i believe), and obviously some systems do not allow certain users access to creating at / cron jobs etc... So, will anyone else have any use for this kind of package? or has someone else already built something to manage this. cheers alex