I resolved the media card issue this is how (copy of a post I issued on the microsoft forum)
I'm working on the webcam drivers
(I have the win 7 64bit version)
I have a Acer Aspire Laptop 5112WLMi on wich I installed windows 7 on a new HDD. Windows 7 installed many of the drivers by itself (including the X1600 ATI graphic card one) (after couple of sessions). Were missing the Webcam ones and the flash media cards reader if I recall correctly. Right now after many attempts I managed to install the media card reader drivers. This is how:
It seems the setup program issued by Acer does not support Win 7 well. So it cannot complete the installation right even if it says it does.
When you check out the peripherals installed 3 PCI ones are in trouble. Going in the properties of each of them you have to install the driver
mannually by selecting the right directory from the filles issued by Acer wich is the AMD64 directory. (you have to repeat the precedure for each PCI devices that don't work)
You will then discover that each of those PCI devices were the SD/MMC card reader, the smartmedia XD card reader and the memmory stick card reader controllers.
Important to notice that you need to restart after, for the device to work properly. Wait couples of seconds (minute or two) before the system digests the card it seems windows seven is some how alive and it takes him sometimes couple of attempts before it works something like a child learning. (but the important thing is that in the ends it learns well! ;o) )
Don't hesitate asking questions!
(sorry for my english I'm trying my best my mother language beeing french)