I've got a PoSH script that will do this if you still need it.
Thanks,Alain Assafhttp://www.linkedin.com/in/alainassafhttp://wagthereal.wordpress.com
Found this one in the XenApp code share:
http://community.citrix.com/display/xa/Add+All+Servers+in+Farm+to+Load+Evaluator
Alan Osborne
President (MCSE, CCNA, VCP, CCA)
VCIT Consulting - Citrix/Terminal Services Remote Desktop Solutions for SMB
VCIT website My Blog