No. A pentium 2 450 scsi w\\ a tnt 2 can only push 30FPS max at 800x600, believe me, it\'s graphically intensive for 1.0 and it\'s going to remain so with 1.1 which should be out fairly soon. I run a P3 800 on a generic Intel 3d card (max of 8mb of ram for that) and 128mb of standard ram and i pull 40FPS. You can tell what\'s taking most of the weight in terms of power (thank god for my P3). If I were you, I recommend a P2 400 at the least. FPS is the most important aspect of the game. Not even lag is that much of a factor thanks to the HL netcode.
In case anyone was wondering, I play CS on about 4 main servers:
UPNetworks T3 1.0
-=7 bits primary CS 24/7 server 1.0=-
SYBLPB CS server
]uGk[ House of Pain
I go to all of them as frequently as I can. Hell, maybe you\'ve played me, [PC]MrClean, ]uGk-r[John Carmack, [PC]Izo, [PC]AK-Raper. [PC]Ryu. The [PC] Clan is a fake clan that me and 4 other people made up just so that way people wont ask if I can join, but I\'m pretty good friends with the admins on most of those servers listed there.