Linux Thin Client (LTSP)

We have BAAN, Tally, Linux Thin client (LTSP), We have 40 BAAN and 20 Tally Users and balance are only using Linux Open office, Internet Browser and EMail on Linux Thin Client, we now want to shift the Users of BAAN and Tally which are currently on Windows to Linux Thin Client, the apprehensions we have is about them being able to access BAAN and Tally Server and the performance, We have planned deploying Win2k Server with Win Terminal Services running on it for which we need to make heavy investments on Servers, i do not want to take risk by purchasing servers and then realise that it does not give the same or better performance than the Windows desktop, do you have come across any such instance and you deployed it successfully, if yes than what would you recommed us for the Win2k server confi with terminal services running for allowing Linux Thin Clinet users to access MS dependent Applications like BAAN and Tally, would you say that this will be a full proff and stable solution and we should go for it.

Thanks
Vinod