Find and delete a variable number of spaces following paragraph character

I receive some documents every week that need reformatting. They come with a mixture of non-breaking spaces and normal spaces at the beginning of each paragraph. I could use a simple Find & Replace (optionally embedded in a macro) to find the spurious characters and delete them but their number and distribution ae not the same week to week.

What I need is a few lines of code that find a paragraph mark and then somehow check each subsequent character and if it's a space delete it, continuing until a character in the range [A-Z] is reached. I will pre-process the docs to change all non-breaking spaces into normal spaces.

I'm working in Word 2003.

Thanks in advance.