I am new to HTML, can anyone advise me on how to fix this bit of code? I need to set up Column headings on a page and the following code does it (incorrectly). How does this work, how can I align as I need to? Any other tips or advice.

My data will also need to be aligned but if I can understand the headings, then I should be able to extrapolate into the data columns.

Code:
'Write headings	
'Write First Row of Headings
	TabOpenRow
	TabWriteCell "",3,"","",0," "
	TabWriteCell "",2,"center","Arial",2,"<strong>Readings</strong>"
	TabWriteCell "",2,"","",0,"&nbsp;"
	TabWriteCell "",1,"right","Arial",2,"<strong>Units</strong>"
	TabWriteCell "",1,"","",0,"&nbsp;"
	TabWriteCell "",4,"right","Arial",2,"<strong>Units</strong>"			
	TabWriteCell "",1,"right","Arial",2,"<strong>Unit Price</strong>"
	TabWriteCell "",1,"right","Arial",2,"<strong>Discount</strong>"
	TabWriteCell "",1,"centre","Arial",2,"<strong>Charge</strong>"
	TabCloseRow
'Write Second Row of Headings
	TabOpenRow
	TabWriteCell "",3,"","",0,"&nbsp;"
	TabWriteCell "",1,"centre","Arial",2,"<strong>Present</strong>"
	TabWriteCell "",1,"","",0,"&nbsp;"
	TabWriteCell "",1,"centre","Arial",2,"<strong>Previous</strong>"
	TabWriteCell "",1,"","",0,"&nbsp;"
	TabWriteCell "",1,"right","Arial",2,"<strong>Used</strong>"
	TabWriteCell "",1,"","",0,"&nbsp;"
	TabWriteCell "",4,"right","Arial",2,"<strong>Charged</strong>"
	TabWriteCell "",1,"right","Arial",2,"<strong>(£)</strong>"
	TabWriteCell "",1,"right","Arial",2,"<strong>(£)</strong>"
	TabWriteCell "",1,"centre","Arial",2,"<strong>(£)</strong>"
	TabCloseRow