Problem importing a file. File not completly loaded.

I'm trying to import a file into excel so I can extract certain parts of it and create a database with that information.
When I import the file I only get the first 1300 rows of the file. The data I need is at the begining and the end of the file. It should go down to row 15000. Is this too much for excell to handle? I wouldn't think so.
When I am in the import dialog and it chooses whether it's delimited or fixed with, the preview shows the whole thing. But after I open it the whole file does not load. Any suggestions?