Ram Upgrade Question

[NIMRAVUS]

I have a Inteva Computer an i am wishing to uprgade RAM. I have no idea how to take apart my PC or anything. My Computer has Intel Celeron 366MHZ, 9.54MB HD, 64MB RAM. I wish to upgrade my RAM to 128MB or 256MB (Preferbly 256). What i really need to know is what kind of RAM I have, or how to find out. (DDR or SD) Thanks