As you may know, Intel graphics do not have dedicated memory but utilizes some of the computer's system memory. 1.7 GB would be the maximum that could be dynamically assigned depending on the DVMT (Dynamic Video Memory Technology) settings of your system. If your computer is configured to use DVMT, graphics memory is allocated based on system requirements and application demands (up to the configured maximum amount). I suggest that you check the article posted here:
http://www.intel.com/support/graphics/sb/CS-029090.htm Graphics | Graphics Memory FAQ For Windows* 2000/XP/Vista/7
Furthermore, please check the information posted on the following link:
http://www.intel.com/support/graphics/sb/CS-033945.htm Graphics | Game troubleshooting with Intel graphics products
After reviewing this information, please check with your game developer to see if the system you have meets the minimum requirements to play this game, and follow the indications from that article under "Checklist for contacting Intel Customer Support"