I'm working as a accounting analyst for XPP process .I want to be in development team. Can you please tell me what are the programming languages other than PERL used for the development?
Hard to speak to the skills you might want to develop without knowing anything about the kind of work where you are that's being done with XPP.
If there is any work being done with "transformations" of the data, then besides Perl you might want to look into XSLT (and if your company uses it then Omnimark).
As far as any work being done with "styling" of the data, if your company uses it then you might want to look into CSS (Cascading Style Sheets) - not really a programming language per se but more of a markup language (but still something that has to be learned).
Perhaps other customers may have some other suggestions.