IDES Re-installation

Friends,

I have a IBM Server on which SAP IDES 6.0 with MS SQL database is running. Previously both the Retail and AFS Servers were installed but the AFS Server got corrupted. Now I want to format the SAP partition and re-install the IDES Server in both Retail and AFS but with Oracle database. Anybody please help me for the same and if possible do provide the detailed installation procedure with screenshots.

Thanks in advance.