Excuse my ignorance. My knowledge of regular expressions is extremely limited.

I have the following regular expression on a regular expression validator. 

```
^(\d{1,3},?(\d{3},?){0,2}\d{3}|\d{1,3})$

```

It currently allows zero. I need to update it so that it does not allow a value of 0.

[Edit: Just to clarify, I would like it to exclude a value of zero rather than a singular "0" - thanks]

Any help would be greatly appreciated.

Thanks
zaps