Why don't you write your own spreadsheet? It really helps in developing a good understanding of the design method and process and you have better assurance that the spreadsheet is done right (since you wrote it).
The LRFD spreadsheets that I've written don't take that much time and are very helpful in keeping me knowledgable of the code provisions.
Read JAE's post twice!! Do your own spreadsheet. You might have to answer questions about your analysis. If you do your own spreadsheet, you'll know the answer!
