Basic G-Code Question

I have a very basic G-Code question. My CNC has only been up and running
for about 10 days, and I have about 10 days experience with G-Code, ;-).

I was programming a series of moves to create a Greek-Key pattern which is a
sequence of horizontal and vertical lines only (although arranged in an
interesting pattern). I was able to complete the task and the result can be
viewed at the following link:

http://members.rennlist.com/statmandesigns/P2_Close.jpg

I generated the coordinates in a Microsoft Excel document and then converted
that to a G-Code program. The successive data points are always redundant
in one of the two coordinates since you always move in either a vertical or
horizontal straight line. If you are sitting at the point (0,0) and you
want to move to (0, .250) then the G-code would simply be:
G01 Y0.250

But is it wrong to specify both the X and Y coordinate if the X coordinate
is not moving. In other words, will this line of G-code result in the same
movement:
G01 X0 Y0.250

When converting the Excel data I ended up with both coordinates on every
line of G-code even though one of the two was always redundant. I am using
TurboCNC to control my stepper motors and it would not work with both
coordinates specified. It would do nothing until the next line of G-code
and then it would connect with a diagonal line, which is not what I wanted.

Is this the way all G-Code programs work or is there something peculiar
about TurboCNC??

Sorry for the long winded question, but I hope it is clear to somebody.

Thanks for ALL of your help in the past several weeks. It is most
appreciated.

Daniel J. Statman, Statman Designs
www.statmandesigns.com