Plumbing Admin software

Hello,

I am conducting some market research to try and assess whether there is any demand for a piece of software that helps manage your paper work.

For instance the software could potentially include....


A database to store customer details, Jobs, Employees etc.
A method of generating invoices from the information stored about jobs.
A place to manage your income and expenditure for VAT purposes.

The software could even be put online to enable you to update job information such as costs time spent on the job via a PDA or mobile phone with integrated internet.

If this were available would anyone be interested?

Or has anyone purchased similar software if so what do you think?

Many thanks

Tom