yes ..u can change it

refer this : http://www.wellesley.edu/Computing/Foreign...setup.html#osX3

1. From the Apple menu choose System Preferences.
2. Double-click on International.
3. Select the Input Menu tab.
4. Check the language that you would like to set up.

Notes:

Some languages offer more than one keyboard. The QWERTY option given for some languages is a phonetic keyboard and may be easier to use. We suggest selecting both keyboards and trying them out.

If you would like to have a map of the keyboard (so you know which keys produce which characters) check the box for Keyboard Viewer as well as the language you would like to set up.

If you would like a palette of all of the characters available at a given time, check the box for Character Palette, or for Japanese, the Japanese Kana Palette.

5.Click on the Options button.
6.Uncheck both checkboxes.
7.Click OK.
8.Close the International Window.
9. Quit out of the System Preferences.

A flag menu will now appear next to the speaker icon at the top of your desktop. Click on this menu to select a different keyboard. When you want to change back to English, just select the American flag.

If you would like to see the keyboard map, choose Keyboard Viewer from this menu.

If the language you would like to use is not selectable from this menu, it means the application you are using does not support typing in this language.

1. Is buying MacBook from different shops make a difference?
hurmm..i think not .check the official price before buy the machine

2. Any MacBook users have any heat problems with it?
cause I am always using my pc for quite long hours.

hurmm..i'm using macbook pro ..and i think there's no problem on heating ...i'm always open my windows to allow good air flow


3. Can itune or quickplay play wma or wmv files?
yes, just install flip2mac plugin and you're done
check this out
http://www.uneasysilence.com/archive/2005/09/4171/

4. Should I wait for Mac OS Leopard to release b4 I get 1 MacBook?
somehow i agreed ..hehe , i prefer u buy the machine ,after Leopard launch.The time i bought my macbook pro ..i'm so impatient. hehehe.Lucky , i learned up all the basic things in Mac with my friend which is using PowerBook G4

i know who's you referring to...ahaks