Unfortunately, I had to remove one usb flash drive as it causes conflict with the set-up. I'll be investigating it but probably later. In the meantime, I have to be content with an 8GB flash drive.
@juntzo
i wish i also have your courage bro!

Come to think of it, somehow I overcome the fear when one initially dismantles the Eee. Normal lang un. Pero after so many open, close, open, close ulit ng housing and some more soldering, I'm quite confident now.
@ast!g
hi adrktemplar,
galing mon, man. ito na nga yong gusto kong marinig na merong nakagawa dito ng ganyan. puwede kaya magpalagay sa iyo isang bluetooth at isang flash drive? malakas sana loob ko kaya lang talagang wala akong alam sa hardware. siyempre may fee.

You're the third person that asked me the same question. I'm not really sure yet if I'd mod for someone else's Eee. Siguro I would if the owner is willing to take the risk. I can't guarantee I won't brick your Eee pero nde naman ibig sabihin nun nde ko iingatan. Remember you'll be voiding the warranty.
@chivar
langya kakanerbyos kse eh hehehe baka magshort yun tingga pag naghinang nakakanginig kse ng kamaya khit ndi nama pasmado ang liit ng clearance sa solder points

ndi ba nakaka wiwi pag naghihinang saka pag magbuboot ka na?? baka maihi ako sa nerbyos neto hahha
I agree. Kahit nga nde ako pasmado pero dahil first time ko mag-mod saka we're talking almost P20K here, talagang kinabahan ako. I think isa lang naman ung critical e. Ung pag-solder sa mobo. After that madali na lang. Malalaki na kasi ung traces ng PCBs nung hub and usb drives. I used a multimeter to make sure walang shorted na connections.
Finally, here are pics of the bluetooth and dip switch installation.
The bluetooth dongle:

Windows hardware wizard detects the dongle: (sorry for the blurred pic)

bluetooth connected with my stereo headset

dip switch installed:

dip switch as seen within the housing

everything working ok:
