There are a bunch of web templates here http://www.gopherforum.com/forumdisplay.php?f=34
you can download one of them and get up and running.
As far as getting commercial accounts, read my blog here http://lawnchat.com/?cat=39
That link shows all the articles on getting commercial accounts.
Most all of them will require proof pf liability insurance. When ever you are ready to get into this, start knocking on doors and find out who is the contact person for submitting bids too.
Keep us posted on how your growth goes. I bet there will be a lot more action going on that you are pushing things.