If by gb you mean hard drive space, you double click on the 'C Drive' icon (assuming C is the letter for your hard drive) and right click in the window on a free spot. Then select 'properties' and it shows you the amount of space you have used and available.
Now, if you meant how to check memory, you go to 'start', 'run', and type in dxdiag and hit enter. It will show you your RAM. Hope that was the info thou was seeking.
4 GB of memory is the maximum you can use in Windows XP, with only 3.5 GB of it seen by Windows.
Windows XP has no bearing on the hard drive size beyond what is needed to store it. Thus a hard drive on which Windows XP is installed can be anywhere from 1.5 GB to 3 TB.
32 GB
Windows xp supports a maximum of 4 gigabytes of ram and 2 Terabytes of hard drive space
If you have a smaller hard drive use 98 first, then change it to FDisk for the file changes to NTFS, then you use Windows XP, but if it's a bigger one like 75 GB on my Windows XP, then do XP first and then do 98 so it knows the hard drive!
The system requirements for Bluestacks are: Windows XP SP3 or Windows 7 2 gb of RAM
3 gb
XP pro SP2:--1 to 1.5 GB depending on selected options & inlusions
Windows XP can use any amount of RAM, there is no exact amount. The minimum is 256 MB, the recommended is 512 MB, and the best is 1 GB +.
A 32 bit Windows XP can only address 3GB of RAM. To take advantage of all 4 GB and beyond, use 64bit version.
If you have a smaller hard drive use 98 first, then change it to FDisk for the file changes to NTFS, then you use Windows XP, but if it's a bigger one like 75 GB on my Windows XP, then do XP first and then do 98 so it knows the hard drive!
Windows XP Professional Install is about 3.7GB on my system using VMware