ERROR: Failed to start monitoring directory changes...... WHY!?!?!?!

I have WinXP Professional which has IIS. I dont know anything about IIS so I dont know if this is an IIS problem or an ASP.NET Problem. I do know its an ASP.NET Error.

Basically,... I made a virtual directory to one of my folders on my computer and gave it an alias of "ResDes". When I try to view an ASPX page,.... it gives me this error:

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Server Error in '/resdes' Application


Access denied to 'C:\Documents and Settings\MyName\My Documents\ResDes\Website\' directory. Failed to start monitoring directory changes

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Access denied to 'C:\Documents and Settings\MyName\My Documents\ResDes\Website\' directory. Failed to start monitoring directory changes.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[HttpException (0x80004005): Access denied to 'C:\Documents and Settings\MyName\My Documents\ResDes\Website\' directory. Failed to start monitoring directory changes.]
System.Web.FileChangesMonitor.StartMonitoringDirectoryRenamesAndBinDirectory(String dir, FileChangeEventHandler callback) +446
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +324

[HttpException (0x80004005): ASP.NET Initialization Error]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +926
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +128

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When I view a normal .htm or .html page there is no problem. So I dont think its an IIS configuration problem but an ASP.NET configuration problem. What am I doing wrong?