That is amusing to hear. Welcome to MobileRead.
I have/am making software that converts all kinds of ebooks to HTML, orders it by author, series, name and cover, creates an OPF and saves it into my library in a sorted manner.
Can convert Multi-HTML OPF to a single HTML opf, LIT->Single HTML OPF and so forth. Code to extract the cover/other images from LIT files too.
All in C# .. of course.