Reuse RAM 206
Dell Backorders 207
what's going on could be one of dells infamous "lack of' customer service you sometimes...
The Dimension 4100 can accept up to 2 sticks of 256MB low-density PC133 168-pin SDRAM DIMMs. Doubling the memory would help.
The Dimension 4600 uses some sort of DDR DIMMs. I have to check exactly what they are.
Clearly, no interchange of memory is possible between the two, as they are of different generations of technology.
The Dimension 4100 is probably unsuitable for most modern video games, no matter how much memory it has and what sort of video card it has. The slower Pentium 3 does not have enough oomph (high tech term) to push all the pixels out to the graphics subsystem quickly.
Kicking the Dimension 4600 up to 512MB minimum as suggested elsewhere is a great idea. For gaming on the 4600, I defer to the gamers in this newsgroup for recommended graphics cards. You can spend all sorts of bucks just on graphics cards, up to $400 at our local Best Buy. Value, as always, in the eye of the beholder... Ben Myers