Characters LAM and ALIF together (ligature) in Arabic

Hello

I'm not quite sure this has something to do with Unicode (rather than
HTML, for instance), but I keep asking the question :

In Arabic, when writing a LAM followed by an ALIF, you have a special
ligature of the two letters

On the arab sites I consult, I see that : لَا

The problem is by now (in my mailer) it appears as (the ligature) +
ALIF, which is incorrect

On the website, it appears as (plain LAM) + (plain ALIF), which is incorrect too

It *ought to* appear as (ligature LA) but it doesn't

What is to be done ? What should be the Unicode sequence to write
just the ligature LA ?

Thanks
Received on Mon Mar 26 2012 - 11:21:01 CDT