Technical Upgrade from 4.6c to Ecc 6.0

Hello All.

We have upgraded the system from 4.6c to ECC 6.0.

We have got SPAU list and Unicode(UCCCHECK) program list.We have shortage of time to resolve both the list.

I have few questions.

1) Do we need to resolve UCCCHECK list first or SPAU list.

2) How we can modify programs,tables in SPAU list.

Could you please give Some step by step need to perform in SPAU list.

3)How we can convert UCCCHEK list

Could you please give STEP by STEP procedure and transaction code.

Thanks in Advance

Muthu