The system uses a 5V DIMM that doesn't conform to industry standards. According to Crucial.com, there are four slots on the board, in two banks of two, so you'd have to get two DIMMs. Cruical is a pretty good place to go. They're more expensive than some, but their memory is definitely high quality. Kingston also has memory for that system...I'm sure that PNY also makes it. You'll find, though, that memory for your friend's system is pretty expensive...probably between US$150 and $275, depending on where you buy. Drew Dunn The NOSPIN Group -----Original Message----- I have a freinds IBM Aptiva model 2176-c33 .It has 1 DIMM slot on the board but regular DIMM will not fit .I had one stick of Kingston DIMM that was to tall so I took 1 DIMM (168 pin)out of another computer and it was to long.Apparently this board takes a propietary RAM.Am I right and if so what do I need and where is the best place to get it? TIA Mike Bridges The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com