Open saved PDF with Droid

I bought a new Motorola Droid today (cool phone by the way!), and I’ve been playing around with it to see how it works. But, there is one thing I have yet to figure out, and thought someone here might be able to help.

I’m trying to open a PDF file I have of a book, it is approximately 46 megabytes. I downloaded Adobe Reader for Android, and copied the PDF over to the droid by USB. Unfortunately, I can’t seem to find a way to actually “open” the file. It seems the only way I can find to open a PDF is to click a link in an email or in the browser. Unfortunately the file is too large to send via email, and it isn’t something that is found on the web.

Does anyone know how I can get the file open? Perhaps a way to browse the contents of the SD card?

Search for a file manager in the Android Market. I use Astro file manager, and it works great for me. I use a lot of PDFs since that’s what the ERes files are for my grad school program.