You need to read the forum guidelines. This is obviously a homework question. We only help people who are at least willing to solve the problem. We don't accept text speak nor we do not tolerate people who are rude to other members. Mangoos adami? This is also an English speaking forum. Congrats! You made my list of CP violators. New feature! Scroll down to see CP offenders! Current rant: "The 50 Greatest Comedy Skits of All-Time!" http://craptasticnation.blogspot.com/[^]

Pete O'Hanlon wrote: a maths book or two (or choose a better, more appropriate forum) See, you can't make up your mind either. :) Luc Pattyn [Forum Guidelines] [My Articles] I dislike the black-and-white voting system on questions/answers. X|

Two suggestions: 1) Text speak is normally discouraged in discussion forums when you have the comfort of a good-sized keyboard. 2) Typing in all CAPS indicates an angry mood of the poster. Vasudevan Deepak Kumar Personal Homepage Tech Gossips A pessimist sees only the dark side of the clouds, and mopes; a philosopher sees both sides, and shrugs; an optimist doesn't see the clouds at all - he's walking on them. --Leonard Louis Levinson

I assume you mean the derivatives? Once upon a time I learned about something that I recall as l'Hôpital's rule[^]. On the other hand, I have no clue what the hell the derivation of n log n is. :~ Do you think Ilidiot knows? :-D -- Kein Mitleid Für Die Mehrheit

See this article[^] Cédric Moonen Software developer Charting control [v1.4 - Updated]

If I understand correctly, your sequence number you want is in bytes buf[22] and buf[23]. If that's true, you can use a cast to retrieve the value: unsigned short SeqNo; SeqNo = *(short*)&buf[22]; Note that if it's only two bytes, it's a short and not an int. Hope that helps. Karl - WK5M PP-ASEL-IA (N43CS) PGP Key: 0xDB02E193 PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193