Sorry Zoda,,,Nope....
Some of us do actually watch what we are downloading

I have the same problem with the client.dll
I have the following config.
I run CS retail from D:\Counter-Strike
I installed Half Life to D:\Half-Life
I downloaded ns_install_v1.exe and installed it.
My CS and and HL (and therefor any mods running off HL) are completely seperate from each other, ie they dont share any files, dll's ect...
I still get this error. Now, the question is this. Which dll is being called for ? is it the:
half-life\ns\cl_dll\client.dll or is it the
half-life\valve\cl_dll\client.dll ?
I also have Win98 with Direct X 8.1 and latest GFX drivers. I personally think, although I could be wrong.. that it has to do with the newest server patch ?? Or was this problem there previous to the server patch ?
I shall keep fiddling, if I find a solution, you guys will be the first to know

Ciao
Jason