sage corupt,needs wiping cleaning start afresh,need help

[jhanks11]

I need help ive just taken over the bookkeeping for a firm and there sage is corrupted by 2 errors there trial balance.There accountant has told me to hold firer that was 3 months ago which was there end of year! Ive put on over 1200 invoices or more since taken over and right at the end of sept the accountant said to wipe clean and uninstall sage then install sage again from scratch,well im still trying to catch up and finalize the vat return for the end of sept.Once ive done that then I can set about wiping sage clean.But my questions are what reports do i need to print off so i have all the information to put back on when sage has been re installed etc.......Im bit confused I think im 80% sure on what reports to pull off but need help.
Also how would i put on the information of the vat return would it be via a journal of all the boxs from the vat return??Do i print of nominal codes and there end and opening balances to be imputed onto sage.

Can anyone help???Ive only recently been qualfiedas a bookkeeper but ive had no training on this so any help would be great.many thanks
jason

[brucedenney]

build option in Maintenance might be what you are looking for, backup first and use carefully.