I've put together a lot of common questions that have been received with SAP NetWeaver '04 specifically related to pre-calculating BEx Workbooks. This document is attached in note 936112 or is available at the following URL:
<a href="https://service.sap.com/~sapidb/012003146900000085752006E/HowtoInformationBroadcasting.pdf">Toubleshoot Information Broadcasting (BEx Workbooks)</a>
If you have any issues or questions around how the pre-calc server is setup, feel free to use this document as a reference. If you have any questions, feel free to ask on this forum...