Old SGI's?!

Can anyone on the list help me out with my SGI's? I made a trade a trade for 2 Personal Iris 4D/35's. Cool lookin' computers, however, I have a few problems..... Neither one has a KB, Mouse or Monitor, and although a decent SVGA works fine, I can't for the life of me find the KB/Mouse for these anywhere (they have the ps2 style connector, but are *not* ps2 compatable). After hooking them up to a Dumb Terminal I find that they both work (at least up to the prom) and 1 actually will boot into Irix 4.0.2... The other has no detectable OS. The one that *does* boot to Irix has a root password that I don't have (of course). Is there any way to gain root access on that machine other than removing the drive and mounting it on another box to change the passwd / crack it? After I do actually get the one box running can I somehow transfer the OS duplicate hard drives??? Is there someone on the list willing to part with an old copy of Irix? These machines will only run up to 5.0.3 I think.. Anyone have a spare KB/Mouse for these machines? I can run them (when I get them working) from a Dumb Terminal, but would rather experience the famous SGI GUI. Any other hints / tips / suggestions would be greatly appreciated! -Linc F.