In my new computer i have installed windows 7 64 bit and coreldraw x6 64 bit.
but when i export pdf drop shadow changes as shown in image.
problem with pdf 1.4 and above only.
What settings are you using when export as PDF?
Look at that quick tutorial I've posted in next tread:
The prepress is alway the best way to solve issues with shadows, transparancies etc. It's a little bit tricky but once you find the idea you will sleep well :)
Actually you can quickly convert the image to bitmap - for offset printing 300 - 350 dots per inch depending of the lpi of the plate printer but if you want to keep the vector shapes in image and to have perfect results I think my tutorial is helpfull. After that the pdf you will create will be OK.
BTW I like the design you made!
In all settings above 1.4 or later except pdf/x-3.
I have installed 32 bit version of Coreldraw X6. There are no problem with 32 bit version.
Choose "compatibitly with Acrobat 7" or higher (compatibitly with Acrobat 8.0 is better) when Publish as PDF