Megan wrote: [snip...] [snip...] [snip...] Megan, The HP 4972A is an older product (late-80's to early-90's vintage) that is basically a portable HP 9000 Series 200 workstation with add-on network analysis hardware. It boots the HP Pascal core OS and then loads the network analyzer specific software. It was last listed in the 1993 HP catalog, and sold at that time for $21,000 (base price). It is very flexible in terms of triggering, capturing, and display of captured data and statistics, but (AFAIK) it is limited to 10 Mbps network speeds. If you wanted to, you could install HP Workstation Basic, the "full" version of HP Pascal, and/or perhaps even HPL on this system and selectively boot into any of them. The internal hard drive is the same as found in the 9153 series drives, so it is probably in the 10 to 20 MByte range. That means that there's not a lot of room for extraneous stuff, but you could always attach an external drive to the HP-IB port... To give you a rough idea of its worth, I've seen them sold by private individuals in the $250-$500 range, depending on options, condition, etc. Dealers ask substantially more for them (of course). Hope this helps! Stan