Line width and projection question

[Christopher Watson]

Hi,

I'm after a fix / work around to what is probably a common problem 
when using geographic projections.

I'm using the WGS84 projection (epsg:4326) are there is no 'wrap 
around' past the 180E/W meridian, i.e., if i center the map on 180E 
then the western half of my global coastline shapefile will not show 
(with the inverse is true if i center on 180W).

Tips anyone?

Appreciate your help.

Thanks,
Chris