Heh, I asked the same question a while ago but no answer there either
I haven't decided if it's worth the risk to just buy a mini PCIe SSD, or if I should go with the less elegant solution to buy a CF to IDE adapter.
I have tried this and the SSD is unfortunately not recognised by the board at all.
The SSD tested was from a Dell mini 9, the SSD from EeePC 901 does not fit.
I ended up buying a DeLOCK IDE Flash Module which works fine (it's like a regular IDE disk,except you stick it directly in the mobo connector). Unfortunately my retailer only had the 40-pin version (and it never occurred to me that the D945GSEJT has a 44-pin IDE contact until I tried to install it). Had to bend pins on the fan header and PS/2 header to fit an adapter
I purchase the OCZ OCZSSDMPES-16G Mini PCIe 16GB SATA Internal Solid state disk (SSD) hoping to use it on the D945GSEJT but the card does not fit into the space provided on the board. The card is to long and extends close to the USB inputs. It can't snap into anything on the board and sticks up oddly. Any small movement and the card comes out of the slot. Very disappointing.