[GENERAL] Install issues

[Alex]

Using Windows 7 64 bit. Tried to install 8.4 and 9.0and it fails right 
near the end when it tries to create or read the conf file. If I 
transfer my postgres 8.4 file over the upgrade takes but the postgres 
service doesn't exist so no communication occurs.

Is there anyway to just install the postgres service? Or another solution?
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