1. Installing Crystal Xcelsius Designer 4.5 on SharePoint 2007:

I had problems installing xCelsius on SharePoint 2007 server; however the support guys were pretty good and helped me with the installation. Posted below for you to use it.

Download xwp.zip

Please note that, current Xcelsius Web Part installer Setup.exe does not work with SharePoint 2007 (Windows SharePoint Services 3.0). 

Workaround to install Web Part in SharePoint 2007 without running installer:

The easiest way to install a web part in SharePoint is to add the web part assemblies to Global Assembly Cache.

Please follow these steps:

1.       Download and unzip the attached Xwp.zip. Drag Xwp.dll and ICSharpCode.SharpZipLib.dll into C:\WINDOWS\assembly folder on the machine running SharePoint 2007.

2.       Open web.config file located in the root of a Windows SharePoint Service 3.0 Web Application directory with Notepad. Normally, the physical location of the default WSS 3.0 Web Application root is C:\Inetpub\wwwroot\wss\VirtualDirectories\80. Click here for more information on how to Find the Web Application Root.

3.       Insert the following <SafeControl> tag between <SafeControls> and </SafeControls>.

<SafeControl Assembly="Xwp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=7e58495f1a9ea430" Namespace="CrystalXcelsius.SharePoint.WebParts" TypeName="*" Safe="True" />

4.       In SharePoint Portal Site Home pages, from Site Actions drop-down menu, go to Site Settings->Modify All Site Settings. Click Web Parts under Galleries to open Web Part Gallery Page. Click New to open New Web Parts page. Check CrystalXcelsius.SharePoint.WebParts.Container checkbox and click Populate Gallery. Once it is populated, you will be able to add Container web part to your web part page in SharePoint 2007.

I hope this helps.