installing new .manifest files

i'm planning to make a vista updatepack and all works great but that sfc dosnt say anything about wrong signatures i have to install the new .manifest files wich are within the hotfixes!

for example a fix for ehrecobj.dll has the following manifest files in it:

msil_ehrecobj_31bf3856ad364e35_6.0.6000.20485_none_8933309d6466bb01.manifest

msil_ehrecobj.d_31bf3856ad364e35_6.0.6000.20485_none_c13906445879f6b1.manifest

the last one has this content:

<?xml version="1.0" encoding="utf-8"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v3" manifestVersion="1.0">
  <assemblyIdentity name="ehRecObj.$D" version="6.0.6000.20485" processorArchitecture="msil" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" versionScope="nonSxS" />
  <deployment />
  <dependency discoverable="false">
	<dependentAssembly dependencyType="install">
	  <assemblyIdentity name="ehRecObj" version="6.0.6000.20485" processorArchitecture="msil" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" versionScope="nonSxS" />
	</dependentAssembly>
  </dependency>
</assembly>

this line is the best:

<dependentAssembly dependencyType="install">

but how do i do that? howdo i run the manifest so that it installs the new one?

hope you understand and can help me with that!

Sereby