Portable version is not supported by Adobe, there isn't portable version available, you should think about using portable Photoshop.
You can not change language to Punjabi because Photoshop currently do not support that language.
Adobe photoshop is installed to your hard drive, where as Photoshop portable can be places anywhere and run from anywhere, such as a USB drive.
You must buy localized version of Photoshop. Adobe Photoshop officially does not ships as multilingual.
There is no way how to change it when installed. You have to rainstall it and change language in the start of installation. There are so many different versions with diiferent languages, so you must have one with language you want. p.s. Sorry for my bad English.
The language is set during installation if done via a legal copy. However, to change - Edit >Preferences - then select Country/region
Go EDIT - Preferences - Country Region. However if this is a legal copy of Photoshop you should have been able to select language on install.
Adobe Photoshop is not multilingual. You must buy or contact support for localized version.
the slice tool in portable editions of PSD does not work
Portable Document Format. It's like an un-modifiable text document. Photoshop can output to it.
To change your preferences in Photoshop you click on Photoshop on the top left of your screen, select Preferences and then select whatever it is you want to change.
See the related link below for official information from Adobe on how to change your language setting.
It seems that Photoshop 7 cannot handle the Vietnamese language, because it cannot work with Unicode.