Return records where ID contains leading letters

[mkallover]

How can I run a query that will return only those records where the ID field contains two leading letters?

Some of the IDs are 100% numeric but some of them are formatted like XX12314. I only want to return those where the two leading characters are any letter.

Is ISNUMERIC the best solution here or is there a better way to do it?

[hertfordkc]

add two calculated fields which contain the first and second character. In the criteria, specify that both are in a character set or not numeric.