strength of datasets

[vrushalik]

Hi,

I want to read XML data into datasets.Also i need to write updated data back to xml file.
I have written a prototype to test strength of dataset to chk how much time it take to read data into dataset,it is taking 2 minutes to read 6MB data.with this speed i am not happy ,i want to improve it,

Can any one suggest me some trick?
Or any body give me idea about strength of dataset

I want make my aplication like it can read 1GB data also.
please help me.
What can i use if dataset cant satisfy my requirements?