I have a compaq armada which is 266 MHz and has 64 MB of ram.

I have run knoppix 3.3 and 3.4 on it as a poor mans install. It runs very slowly and is barely useable.
I have Win ME on it which runs smoothly and is perfectly useable.

Could someone please let me know of a linux distro which would run nicely on this and is kept
up to date.

live CD or install

I ideally want it to have Kismet on it and if poss aircrack and weplab.

Thank you for your help