How to pad word values to 4 hex digits?

[TimRegeant]

Could someone explain how I can pad a byte/word/long field to 2/4/8 digits?

For instance, currently I have something like this:
1A000008 00 00 dw 0h word1

I would like the output to be formatted/padded with 4 digits like this:
1A000008 00 00 dw 0000h word1

Possible?

[TimRegeant]

bump Possible? Not possible? Anybody?