Please help

Please help me with this. I really need your advice as to how to retrieve the data in my postgresql database.

I have postgresql installed in Windows XP platform five months ago. Just yesterday my OS bugged down and saying NTDLR is missing.  What I did was I re-installed my OS. When I finished my installation I found out that I cannot access anymore my postgresql using PGAdmin III.

What should I do to access my database and retrieve the important records in it?          

Unfortunately, I have not created a backup of it.  Please help me.

Thanks in advance and God bless...Roseller Romanos
STI-Pagadian
Gillamac Building, Pagadian City
Office Nos: (062) 2144-785
Home Nos: (062) 2144-695
Mobile Nos: 09203502636