Is neccesary to install something from 2005 in Box with W2k and SQL2k in order to Tunig Advicer work in WS with all 2005 installed? (I don't understand my self!!!!!!) Let me try again: Work Station with all 2005 installed. Box with W2k SP4 and SQL2k SP3a. I canÂ´t connect Tuning Advicer from WS to BOX. The error message is irrelevant, I try to find it in Microsoft, Google, etc, no way. I have to install something (2005) in Box? Luis Martin Moderator SQL-Server-Performance.com All postings are provided â€œAS ISâ€ with no warranties for accuracy.