Advice needed and maybe even implementation help with current VBA project and upgrade.

Okay, this might be a little long, but I will be as descriptive as possible.

Okay, I work for a large company analyzing data in Oracle tables on a daily basis.  Our department creates a lot of reports and applications that are usually designed to be "quick fixes" so that a user gets to see what they want and then if they like it, it might be sent to another dept to be done up and look more professional.
So, my coworker and I created an app using Access 2003 and VBA that pulls down data and analyzes it and graphs that data.  The graph updates every minute and is as near a real-time view of our operational flow as we can get from these tables.  The graph displays 4 lines based of of tables that are built from the data that is pulled down.  For the data to be pulled, manipulated and then graphed takes about 20 seconds when the app is running locally.  Running from a network share, it takes closer to a minute to do the same work.
Right now, this isn't a problem because it is just loaded on a pc in the office and the managers come by and check it.  Very soon though, the regional big wigs are going to want to see this without haveing to come to this office.  Most if not all of our dept apps are housed on servers that can be accessed by anyone that we give rights to, but there is nothing that generates a graph and runs minute to minute.  Also, to go on the servers it would have to have a true VB (this is the language I know) front end.  I have written most of the app in VB.net and I currently just display the data in DataGridViews right now just so I can see it.  
I am curious what some more experienced professionals might suggest and what options I might have as to how to go about making it avaliable to more users without it taking so long to run.  I have looked into graphing with the msChart control as we don't have any graphing software that I am aware of...