Mobile microSDHC card 8GB - Cannot read on xp notebook, however can read on win 7 notebook.

I tried to read my 8 GB microSDHC card on my Notebook running XP, however it asks to insert disk. When inserted it into a notebook running win7, I can access the files.

Does anyone know how to solve my problem?

I have just my 1 GB micro SD card from my phone and it works on my Notebook running XP.

Finally found out that my card reader is not SDHC compatible.