how to open a document that is ".aspx" with my mac?
how do I open a document that is ".aspx" that was an attachment with my mac?
iMac (20-inch Mid 2007), Mac OS X (10.6.8)
a .aspx file is a ASP.NET source file. You might be able to open the file to read the contents, but you won't be able to run it - it's only supported by ASP.NET running in Microsoft Windows Server.
What is the purpose of the file? It is possible that it's not an actual .aspx file, but the output of a .NET application that just lost its file type. In that case you'd kind of need to know what the file type is expected to be in order to know which application should open it - for example, it's possible for a web application to generate a PDF report, but a bug in the server fails to set the file type appropriately, so it gets saved as a .aspx file rather than a .pdf. A little experimentation might be in order.