gdgt

It also helps to have a plastic tool [2] that helps you avoid scratches on your case.

The first step after removing the battery (and obviously unplugging AC) is to unscrew the three screws near the speakers and remove the door (page 51). There was more resistance on the left side but I eventually got it out. Next, follow the instructions on page (pages 56 - 57). I find it helpful to think of first inserting the chip at a 45 degree angle.
"When installing: Insert the notched end of the DIMM into the socket. Press the DIMM firmly, and pivot it until itsnaps into the place. Make sure that it is firmly fixed in the slot and does not move easily."

The keywords are pivot and snap but I tried to help it in by flexing back the little bracers shown in Table 11.

[1] download.lenovo.com­/ibmdl­/pub­/pc­/pccbbs­/mobiles­_pd...
[2] www.mendapump.com­/MendaCatalog­/Tools­/Probes­/Wooden...