Welcome
If this is not a one off exercise, there is an alternative, if your employer is willing to spend some money on software. Its called Jutoh -
http://www.jutoh.com/ and there's a free trial version.
You don't need any technical knowledge about creating ebooks as Jutoh does it all for you and it will create multiple formats in one go. The user interface is like a scaled down version of MS Word including the ability to create you own styles. The current output formats are: EPUB, Mobipocket (requires add-on), Open Document (ODT), Text, HTB, MP3, HTML & Smashwords OpenDocument.
Once you've created your ebook you can check how it will appear on an eReader using the vendors PC software e.g. Reader Library for Sony devices, Kindle for PC from Amazon etc.
Also a suggestion for checking the output, which ever method you use to get there. Ask if any of your workmates own ereaders or other mobile devices and would they help test your output. I'm sure between all of them you should end up with a representative sample.
Whatever you decide good luck and I hope it all goes well.