According to the released information, partial bids are not accepted. The complete documentation is free to access in English and in Hungarian via the company's website.
The bids are accepted until 16 May, 2011 2 PM (CET), while results are to be announced next June 3rd, 2011.
All the information relatd with this tender process can be found in the following documents:
Call for Tender
http://www.szerencsejatek.hu/popup/call_for_tender_IJSR_2011.pdf
Requirement specification
http://www.szerencsejatek.hu/popups/requirement_specification_IJSR_2011.pdf