Someone can give me the nk 4s015-119 386sx4's user manual

Does the manual give any indication ? If not, you may be able to google the compatibility or otherwise.

Try this site:

http://search.dell.com/results.aspx?c=us&l=en&s=gen&cat=sup&k=inspiron+zino&rpp=12&p=1&subcat=ddc&rf=any&nk=f&ira=False&~srd=False&ipsys=False&advsrch=False

or:

http://www.aeato.com/users-manual/dell-inspiron-zino-hd-manual-dell-inspiron-400-manual.html/

You can find a user manual here: http://search.dell.com/results.aspx?c=us&l=en&s=gen&cat=sup&k=vostro+v13&rpp=12&p=1&rf=all&nk=f&ira=False&~srd=False&ipsys=False&advsrch=False

give me your email and ill try to get some manual for you