RODBC connect to Excel (64-bit Windows 7)

Hi to all.
I have a problem to connect to an Excel database using RODBC.
Namely, I am using 64-bit R 2.14.0, under Windows 7 and I tried following:
library(RODBC)

channel <- odbcConnectExcel("results.xlsx")

Error in odbcConnectExcel("results.xlsx") :
 odbcConnectExcel is only usable with 32-bit Windows       # ok this is
clear why it doesn't work

channel <- odbcConnectExcel2007("results.xlsx")             # this was

one of proposals from old R help posts, but it doesn't work for me
Warning messages:
1: In odbcDriverConnect(con, tabQuote = c("[", "]"), ...) :
 [RODBC] ERROR: state IM002, code 0, message [Microsoft][ODBC Driver
Manager] Data source name not found and no default driver specified
2: In odbcDriverConnect(con, tabQuote = c("[", "]"), ...) :
 ODBC connection failed

After that as it suggested in R data import/export manual I
installed AccessDatabaseEngine.exe. Also I used ODBC in
c:\Windows\SysWOW64\odbcad32 to create data source called result. I check
if it is created:

odbcDataSources()

                                            dBASE Files
  "Microsoft Access dBASE Driver (*.dbf, *.ndx, *.mdx)"
                                     MS Access Database
             "Microsoft Access Driver (*.mdb, *.accdb)"
                                             Excel file
"Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)"
                                               * results*
"Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)"

and tried again but it doesn't work:

channel <- odbcDriverConnect()

Warning messages:
1: In odbcDriverConnect() :
 [RODBC] ERROR: state IM014, code 0, message [Microsoft][ODBC Driver
Manager] The specified DSN contains an architecture mismatch between the
Driver and Application
2: In odbcDriverConnect() : ODBC connection failed


Could someone guide me what should I try next to fix a problem? Is this
some problem with Drivers or not?

Thanks in advance

Andrija

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