Thank you very much for answering
Regarding the first error
At the begining i made a copy of SciLexer.dll and ScintillaNet.dll and it worked fine. After closing my project and open again i saw only the blue-white screen indicating to error.
This made me confused
I read in a thread here that we have to make another copy of the SciLexer.dll to the system32 directory, but the reason for that is unknown.
I tried it and it worked :)
Any way i hope this here is useful for other newbie like me
Thank you for this great ScintillaNet project