Off Topic - EXCEL

["Dr. R.BHANkk" <bhanjar@xxxxxxxxxxxxx>]

I use Microsoft Office2000. Recenely, I am 
encountering a problem while working with EXCEL. While typing any decimal number 
(for example 2576.36) the decimal point is changed to "," (i.e. 2576,36) and if 
I enter any number like 3,834.39 then the number changes into 3.834,39. 
Basically the decimal point changes to comma and comma changes to decimal 
point. Therefore, while doing any math calculation it gives error. Any body 
has a solution to this problem.
Bhanja