Joomla script change and virtuemart error correction

We have to modify a script so it can end is process in one step insted of actual two steps. Actual Steps the user request a quote the script gives a quote and the user must compile with his name and surname the script produces a page to print Desired steps the user request a quote the script produces a page to print Basically, we have to remove the second step from the script. II We have to fix a virtumart error that doesn't allow us to insert new categories and items cause the software generates very high id's when creating new categories. OPTIONAL Instead of modifing the actual script, we could produce a simple script that get quotes from another site and produce, after a calculation, a landing page with an offer fot the client with progressive id's