I have this App:

BackEnd: Oracle 8i
FrontEnd: Visual Basic 6
Reports: Crystal Reports
Model: Client/Server (Two-Tier)

From VB code, I interact with Oracle Stored Procedures, and with the Crystal Reports, I can modify completely the reports at run-time.

From de VB code, I generate new Power Point, Excel and Word documents, and populate them with the data in the Oracle DB.

Actually I need to install the Oracle client and the FrontEnd in every PC client.

I want to translate all this functionality to a web app, so that I do not need to install anything in the PC client. I start from the fact that all PC clients have installed an internet browser (Iexplorer or Netscape) and Office, by default. I think I need to do it using the three-tier model.

Can I do all this with Java technologie? What Java courses will I need to take? What do you think about all this?