I have an Inspiron 8600 with 512 MB of RAM.  I would like to upgrade to 2 GB.  Dell's so-called "Service Department" told me to buy two 1 GB chips, remove the old 512 MB chip, and install the two new 1 GB chips.  They also told me that I would have to pay extra if I wanted Dell to tell me how to remove the old chip and install the new ones.  Can anyone out there tell me exactly how to do this?