can any 1 help me out in this. is there any software which can convert series 60 application into series 80 or 90.
pls let me know.
is there any software to convert series 60 to series 80 or 90
Not really. Especially not, if you only have the application binaries and not the source code. If you have source code, you can look into companies such as Peroon in case they have tools that can help in porting the sources.
You can to some extent also use tools such as AppForge if you're writing your own apps, to simultaneously target more than one kind of device.