my boss own a S10e and I a Thinkpad X61.
In my notebook I've instaled a Sierra MC8775 3G WWAN card.
in this service manual http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/45n3684_01.pdf
I've seen that only S10 has a cover in its bottom to have acces to SIM CARD and WWAN Card. S10e hasn't it.
My question is.... Does anybody know if S10e has both slots (WWAN + SIM CARD), even covered? If yes, I 'll try to disassemble the netbook and install another MC8775 that I have... otherwise, I won't waste my time, disassembling it to then figure out that slots are not there.