PC to Thin Client (Citrix)

I have 175 IBM computers ranging from Celeron 433 to P4 3.0GHz. We currently need to transform these machines from Win XP over to Citrix Clients. We DO NOT want to use a window operating system since turn over time is of the essence. Would anyone know of a way to get citrix clients on these machines without the use of a windows OS? I have tried melding the Knoppix version of Linux with Citrix on a CD without any luck. Open to suggesions.

Thanks