Vista Tutorial - BSOD error. I am unable to read the minidump

Hello. I have been receiving random blue screens and then get restarted. I have tried to read the mini dump file using Windows Debugger 64, but keep getting a error saying

"Symbols can not be loaded because symbol path is not initialized. *
* *
* The Symbol Path can be set by: *
* using the _NT_SYMBOL_PATH environment variable. *
* using the -y <symbol_path> argument when starting the debugger. *
* using .sympath and .sympath+ *
*********************************************************************
*********************************************************************
* Symbols can not be loaded because symbol path is not initialized. *
* *
* The Symbol Path can be set by: *
* using the _NT_SYMBOL_PATH environment variable. *
* using the -y <symbol_path> argument when starting the debugger. *
* using .sympath and .sympath+ *
*********************************************************************
Probably caused by : ntoskrnl.exe ( nt+8f421 )

Followup: MachineOwner".

I am running Vista 64 Bit Ultimate. The Error below is what I received tonight. I would appreciate any help that anybody would be kind enough to give me. I also would love to learn how to import the proper symbols library so that I can read the mini dump file. I downloaded the reader from Microsoft's website and thought that i downloaded a proper definitions library to interpret the dump files, but am going wrong somewhere. Thanks in advance for the help.

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6002.2.2.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF80002CA3421
BCP3: FFFFFA6001D2B978
BCP4: FFFFFA6001D2B350
OS Version: 6_0_6002
Service Pack: 2_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\Mini070209-02.dmp
C:\Users\WARLORD\AppData\Local\Temp\WER-2757000-0.sysdata.xml
C:\Users\WARLORD\AppData\Local\Temp\WER63DE.tmp.version.txt

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Any help on this would be greatly appreciated. I am getting BSOD's at least twice a day. Please if anybody can check out the Minidump I posted and let me know where I should start trouble shooting that would be great! Thanks again in advance.