I have a document and when I go into print preview the page changes to show only a bit of the actual content and the rest is white space. I have tried changing the page size to normal letter size but then the content gets all messed up and displays most of the letters in one vertical line and I end up with about 900 pages of that. please help!

Take a look at your indent settings (right indent).

By the way, nothing to do with this problem, but...
Unless you need to be using the 64-bit version of Office for gnarly calculations in Excel or Access, you should reinstall as the 32-bit version. For Word, the 64-bit version is absolutely no better and can limit third-party productivity products.

Here's what it looks like. Tried looking at my indents and everything looks ok there.

Doesn't look like anything to me.
How to attach a screenshot or file in this forum.
Try attaching a Word file with the first few pages (not a screenshot).