Newbie trying to flash W800i :)

[skinless]

Hi guys,
This is my first post and first day with all these glossary, XS++, patches and Firmwares :)


22:19:44| Baseband ID: 8040
22:19:44| Protocol Version: 3.1
22:19:44|
22:19:44| Sending db2010_cid00_prodid_p3l.bin...
22:19:44| Applet ID: 061113 1250 ALUCXC125872_COMPACTPRODUCTION_ID_LOADER P3L
22:19:44| This is a PRODUCTION_ID loader
22:19:44| Activating GDFS...
22:19:44| Phone name detected!
22:19:44|
22:19:44| Sending db2010_cid36red_flash_r2ab.bin...
22:19:45| Applet ID: 050425 0904 MATCXC1326738_COMPACTFLASHLOADER R2AB
22:19:45| This is a FLASH loader
22:19:45|
22:19:45| Profiling SEMC phone...
22:19:45| Platform: DB2010
22:19:45| OTP CID: 36
22:19:45| EROM CID: 36
22:19:45| EROM Color: Red
22:19:45| IMEI: 35682900xxxxxx
22:19:45| Phone ID: W800
22:19:45| Region: APAC_1
22:19:45| CDA: CDA102430/101 R3A
22:19:45| Firmware Version: R1L002
22:19:45| EROM: n/a
22:19:45| Ready for operation!

This is what XS++ had to say about my phone. Before i get along experimenting ;) I need to know few things.

can i use FS other than APAC ?
Also the main I got is CHINA_CA RED 36 i suppose (not surei read something like this in software info on phone ) can i flash it with european or american ?
What does unlocking phone means ? My phone is unbranded.

Or is it that i have to get FS files and Main of APAC only for my phone ?

Thanks