Now, you could just end the whole process here, but I wanted to quickly share with you a few apps that you can download in order to help you view this newly created excel file.
Documents to Go [$10]: Despite being sort of expensive by app standards, Documents to Go is the endgame for viewing document files (from Word to Excel and everything in between) on your iPhone, and really would probably come in handy for much more than just this one task. A link to this app is in the references.
QuickOffice Pro [$15]: Another great app, this one has compatibility with all of the Microsoft Office file types, so it's perfect if you're a heavy user of Word, Excel, Powerpoint, etc. Again, link is in the references.
Of course, there are many other iPhone Excel apps available as well, but I wanted to highlight these two because frankly, they're the two best. My vote would go to Documents to Go, but feel free to check them both out yourself and make a decision!