serial port communiction

[jpn]

i have 1 doubt. is it necessary to configure qextserialport-1.1.tar. if yes plz tell me the procedure.

You can build QextSerialPort like any other Qt project. A qmake project (.pro) file is shipped so type:

> qmake
> make

to build the library.

[jpn]

Oh, and in case the actual problem is how to extract qextserialport-x.y.tar.gz:

To extract .tar and .tar.gz files on Windows 9x/NT/2000/ME/XP use PowerArchiver 6.1 (freeware) or 7-zip (freeware) or Winzip (commercial)