First of all don't use that XS++ 3.2 because it's beta - use XS++ 3.1 (Darwin)
2. Use this files MAIN: K770_R8BC004_MAIN_GENERIC_VI_RED52
FS : K770_R8BC004_FS_EUROPE_5_RED52 and
CUSTPACK : HB1-06_Gen_CDA102568_14_R8A_GENERIC_EUROPE_5
3. Exactly
4. For now - don't need that and if you be careful and follow tutorials everything will be OK
5. Use this tutorial for installing drivers on Vista USB Flash Driver Installation - Guide - Top Sony Forums
6. You don't have that problem with XS++ 3.1 and if you do all other things wright
Regards and GOOD LACK