InstallShield Knowledge Base The one place to go to see if the problem has already been reported and a fix or workaround is available.
InstallSite.org An excellent site that is maintained by Stefan Krueger of Germany. Sometimes this site has a better listing of known bugs than can be obtained from the InstallShield site. Excellent reference material and a great repository of neat code snippets that can be of benefit.
InstallShield NewsGroups An excellent starting point to research problems that don't have an official fix or workaround. The questions posed and answers provided may give you the vital clue to solving the problem. Understand that many answers are not provided by "true" InstallShield experts and many times must be taken with a grain of salt.
InstallShield Tips and Tricks Almost a hidden feature, this excellent collection of white papers deal with various tricks that are available for dealing with hard to resolve problems. Although it looks like the material is dated - specifically written for InstallShield products that are now 2-3 releases back, the material is still valuable.
InstallShield Related Blogs There are a few excellent Blogs dealing with InstallShield MSI's, and Windows Installer. Start with mine "Shieldmaster" and use the links there for additional Blogs of interest
FAQ for Windows NT and 2000 An excellent reference site for questions dealing with the inner workings of Windows NT/2000. This site is maintained by John Savill. Go to here for Active Directory and Group Policy questions and answers.
MSDN topic - Windows Installer You don't need the MSDN subscription to reference the Windows SDK regarding Windows Installer. Here it is in all it's glory and always updated!
MSI Frequently Asked Questions A valuable site for answering those lingering questions on MSI, but were afraid to ask your co-workers! Real plus - it is maintained by Microsoft and covers both General Questions as well as MSI availability and Updates.
Certification Guidelines for Logo Compliant Installations If you want your Installation Setup to receive the Windows Logo Certification, this site is critical to understanding the requirements. Obvious starting point, which is not clearly stated is that the Installation Setup be MSI format based!
IIS Configuration Information This site is the starting point for understanding how to install, configure and troubleshoot the Windows IIS (Internet Information Server).
IIS AnswerSite If the previous site didn't answer that burning question on IIS - try this one!