See if this helps
go to your site Admin and choose manage, pages, create new page. Notice your browser address window shows that you are now at YourSiteName.com/blog/wp-admin/page-new.php
Skip the first area that says Write Page and scroll down to the Upload area.
Click browse to find the file on your computer that you want to upload and select it (in XP I had to choose “open”. The browse window closes leaving the file field filled in with a URL to the file you just chose.
Fill in the title (which will become a clickable text link to your file).
Click Upload.
Now click on the name of the file that appears in the upload area- notice the drop down menu which says:
Linked to File
Using Title
Send to Editor
Delete
Close Options
Click on Send to Editor – see how the link appears up in the Write Page section.
Give the page a title and click Create Page.
To see the results of your work go to Admin, manage, pages .