First @BoyBoy ... Nihil is correct (although it may be seen as a little bit harsh) you won't get the support you want for windows 7 with the onboard video card. You should look at getting an inexpensive video card for your machine if it supports one.

First off..
Intel: Supported OS's (Win 2000 & XP)
http://www.intel.com/support/graphic.../cs-011964.htm

Second, their explaination as to why it won't work with 7 is due to Aero (also as Nihil said)
http://www.intel.com/support/graphics/sb/CS-030907.htm

Specifically:
The Microsoft Windows 7* operating system (OS) supports two different graphics driver models: the Windows* Display Driver Model (WDDM 1.0 & 1.1) and the older Windows* XP Driver Model (XPDM). WDDM drivers provide the 3D graphical user interface experience to users. XPDM drivers provide an interface that visually resembles the Windows XP user interface and do not support Windows 7 OS premium features such as the Microsoft Aero* user interface.

Only XPDM drivers** are available for the following older Intel® graphics controllers:

* Mobile Intel® 915GM/GMS, 910GML Express Chipset Family
* Intel® 82915G/82910GL Express Chipset Family
* Intel® 82865G Graphics Controller
* Intel® 82852/82855 Graphics Controller
* Intel® 82845G Graphics Controller
* Intel® 82830M Graphics Controller
* Intel® 82815 Graphics Controller
* Intel® 82810 Graphics Controller

AND

Why doesn’t Intel provide WDDM graphics drivers for older graphics controllers?

WDDM graphics drivers are not available due to hardware limitations in the older Intel® graphics controllers. The overall hardware architecture and design of these older graphics controllers were finalized prior to Microsoft's release of details and specifications on WDDM drivers and running the Aero user interface. Thus, there are hardware limitations that would limit graphics performance and memory capabilities when attempting to run a WDDM driver on Windows 7 operating system with these older graphics controllers.

The understanding in that .... is that you can get an XPDM driver that will work, but that means you won't be able to use any of the Aero features, and again, this driver is not tested or supported.
Intel has not tested XPDM graphics drivers on the Windows 7 operating system. XPDM drivers may install but may function with limited functionality.

So again.. advice is.. if your system can take a video card, you should look into that as the best solution to getting a better and supported driver to work with Windows 7.

Post back with your PC model and we can help look up cards that should work for you. There are some really cheap sub 50 dollar cards that would be light years ahead of the intel chip you currently have ... but only if your system can take an add-on card.