hello I am installing SQL server 2008(32 bit) on windows 7(32 bit), but setup is giving errors like:....(a snapshot is also attached)

can any1 plz help me??

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Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: setup100.exe
Problem Signature 02: 10.0.2531.0
Problem Signature 03: 49cfaf64
Problem Signature 04: Microsoft.SqlServer.Chainer.Setup
Problem Signature 05: 10.0.0.0
Problem Signature 06: 49cfaf64
Problem Signature 07: 4
Problem Signature 08: a
Problem Signature 09: System.IO.FileNotFoundException
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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