I just made a Follow-up to a question this morning that might help you with what YOU can do to see if the fix is a simple one. As Steve: says, it may be just a simple solution of adding/extending a downspout FURTHER away from the foundation, or installing a 'missing gutter' or fixing an existing gutter.
Check it out. Certainly, the original Post isn't exactly like yours but you may find my Follow-up useful, nonetheless. Leaking Basement Of course, if you have more specific questions, you know where to find us.