your english is fine.
i joined in october with selespeed problems on my 156 (2004.)
the tecnical help i've received from the guys on here has been amazing - they've saved me a lot of money and stress.
don't panic about your problem, it might not be as serious as it seems.
i'm sure the tech guys will post some help soon, but if possible, try
1) checking selespeed oil level (uses 'Tutela CS speed oil', i bought mine online.)
2) checking battery is ok as this can cause selespeed to have problems (my battery needed replacing at 4 years old.)
3) use the forum search for similar threads; especially 'selespeed pump.'
you will find a lot of good information about the selespeed on here;
Alfa Romeo Selespeed - Home
if possible, don't let the alfa dealer charge you for a diagnosis, and if they give you one, i hope you'll have a chance to see what the guys on here think about it - between them they know everything about the selespeed.
very best wishes,