Dear hpkrekt,
There are two methods to add AjaxUploader httpModule to web.config's httpModules list.
IIS 6.0 and IIS 7.0 Classic mode
<configuration>
<system.web>
<httpModules>
<add name="CuteWebUI.UploadModule" type="CuteWebUI.UploadModule,CuteWebUI.AjaxUploader"/>
</httpModules>
</system.web>
</configuration>
IIS 7.0 Integrated mode
<configuration>
<system.webServer>
<modules>
<add name="CuteWebUI.UploadModule" type="CuteWebUI.UploadModule,CuteWebUI.AjaxUploader"/>
</modules>
</system.webServer>
</configuration>
Thank you for asking