Question: Doing a 'dir' on a subdirectory in my web root

[VB Programmer]

My web root is in C:\Inetpub\wwwroot\MyDir

I have a graphics directory in C:\Inetpub\wwwroot\MyDir\MyGraphics

I want do do a 'Dir' to see 1st if the directory exists, then 2nd to see if
a file exists. How can I do this so I dont have to put in the full path???

This doesn't seem to work "Dir("MyGraphics", FileAttribute.Directory)".

Thanks!