Go on, ask us. A great thing to add with regular expression related questions is a whole load of examples. For example if I was to ask about matching something which was 4 lowercase letters followed by two numbers i might add the following to my post:

should match:
abcd12
dhof83

should not match:
abc12
abcd1
a1cd12
abcd1a
a bc12
abcd 2
[download]

Often what you want to do is best described by examples.