Failure to run QB graphics

[GordonSweet]

I cannot run any graphic SCREENs of QB / Quickbasic apart from SCREEN 0 text or most DOS software using a Flat screen monitor unless I first run DOSBOX or use FB instead. I am told by someone this is because I have a 64 bit CPU but am not using a 64 bit version of Windows. I use Windows XP because when I bought this PC I did not want the bother if hunting for numerous Vista drivers for all existing hardware. But I doubt if my Windows XP is 64 bit as I did not know MS produced a 64 bit version of XP. If they do how can I check if my XP is 64 bit?

Gordon