Troubles with BMP085 pressure sensor & I2C protocol

They're onboard 4k7, the board could be seen here http://www.drotek.fr/shop/en/11-bmp085-pressure-barometric-sensor.html

what do you mean by

"Also what are you using for level translation since it's a 3.3V device interfacing to a 5V Arduino?"

?

I take 3.3 V supply from board and connected it to sensor +VDC, GND to sensor GND, analogPin 5 & 4 to SCL and SDA. Please don't tell me I should place a level converter even between I2C ports... aaaaaargh!