[two folders with different currencies in same domain]

hi,

 

 

 

i have an site in opencart.

http:// www. domain.com/

i have chosen default currency as pound.

and it shows great in frontend... i.e all products in pound.

 

but....

http:// www. domain.com/folder/

in this ....when i have chosen default as dollar.

 

and it shows in all products in dollar in  frontend in this http:// www. domain.com/folder/

 

 but currency changed in this also.... http:// www. domain.com/ .... it shows dollar instead of pound.

 

 

i hope u understand what i asked!!

 

can anybody sugggest me on this something... how to correct it.... ????

 

thanks.