Method ‘Post’ of object ‘IOWSPostData’ failed error

I am trying to import one of my spreadsheets into Microsoft SharePoint 2007 and I keep getting Data failed error message. Let me give you all the basic structure, I have Office 2007 and SharePoint 2007 installed on my Windows Vista machine.
I am attempting to import and the following error comes up.
Import to Windows SharePoint Services list
Method ‘Post’ of object ‘IOWSPostData’ failed
I tried researching on the web and found a few solutions, which did not work out.
Please let me know how I can proceed with the export.
