Why is my visual studio 2008 project read-only

I'm working on a project for scho开发者_StackOverflowol, we use visual studio 2008 there and I use it at home, both are express edition. The project in question I started at school, but I cannot edit it at home, when I open the .sln I get this

"The IntelliSense information will not be available for .VC++ projects because the Intellisense database file Location/Junk.ncb could not be opened for writing.

Other features will also be affected if the solution directory is read-only."

How do I open my project so that I can edit it?

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Two suggestions:

• Make sure you don't already have the solution open in Visual Studio (this may sound dumb, but you can't open a solution in two Visual Studio instances at the same time)
• Delete the Junk.ncb file (this file is generated by Visual Studio; it will be recreated when you reopen the solution).

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To make your solution directory writable, right-click on the solution directory, select Properties, and uncheck the Read-Only checkbox in the dialog that opens.

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• It's open somewhere else?
• You saved the solution on a CD and copied the files to your hard drive? (I have to change the attributes manually on my files because the read-only attributes transfer to the copies on the hard drive.)
• It's checked in under source control?

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Probably because you already have this solution open in another Visual Studio window.

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Maybe an instance of Visual Studio hang up and didn't response but it still held Junk.ncb