Error 2894 on Windows Vista when trying to install Messenger

I am using Vista Home and have received the error 2894 when I tried to
download Windows Messenger. These are the following problem reports
that I have received:

Windows Modules Installer
Problem signature
Problem Event Name: WINDOWS_WCP_AI_FAILURE2
OsVersion: 6.0.6000
InstallerId: File SD
Phase: 32
Mode: Delta (servicing up)
Status: 80070002
Component: x86_microsoft-windows-
riched32_31bf3856ad364e35_none_183050c67a1d6eda
QueueType: Servicing
Annotation: unknown
OS Version: 6.0.6000.2.0.0.768.2
Locale ID: 18441

Files that help describe the problem
pending.xml
poqexec.log
Cbs.log
memory.hdmp
minidump.mdmp

and

Windows Live Messenger
Problem signature
Problem Event Name: APPCRASH
Application Name: msnmsgr.exe
Application Version: 8.1.178.0
Application Timestamp: 45b12d6a
Fault Module Name: msnmsgr.exe
Fault Module Version: 8.1.178.0
Fault Module Timestamp: 45b12d6a
Exception Code: c0000005
Exception Offset: 000a3425
OS Version: 6.0.6000.2.0.0.768.2
Locale ID: 18441

Extra information about the problem
LCID: 1033

I badly need step by step help on how to solve the above problems.

Thanks very much!