Is it possible to change the ram on a msi u135 dx special editio *

Acer Aspire 1650 ( 1652WLMi ) Widescreen
Intel Pentium M 735 1.7GHz 1Gb Ram 30Gb Hard Drive 15.4" WXGA Screen DVD RW Drive ATI Mobility Radeon x300 Graphics Broadcom 10/100 Network Intel 2200BG Wireless PSU Windows XP Installed