VariPrint support Windows XP English OS.
But be attention: when installation of VariPrint, the virtual printer HAIYAA.PPD won't be installed automatically, which will lead to output problem. So after installation of VariPrint, please install HAIYAA.PPD manually, the detail steps, please refer to User Guide. or refer to the thread http://www.haiyaatech.com/english/bbs/b_kantie.asp?tiezi=558
Another notice: please check if the system has Microsoft .Net Framework, if hasn't, please install it in time.