Need Javascript Service Request/Invoice for Website

I have an old Javascript service request/invoice on my website that I would like improved/updated. The current form is confusing for clients, so I'm hoping for something a little more user-friendly. The challenge with creating a new form is dealing with all of the variables involved. The other challenge is that I can't afford much, as my business is VERY small. Since I'm not allowed to post any contact info here, and I don't want to attach the file for the current form, you will need to contact me for the URL to the form, so that you can see what's involved. I apologize for the lack of detail here, but I'm not very well versed in technical terms, so it would be difficult for me to describe the job. Once you see the current online form, you'll probably know more about what's needed than I do!