|"but all my hardware is about 4 yrs, and now to find win 7drivers for them......"|
I installed Win7 on an old Pentium III machine, and it loaded drivers for all of the important components--chipset/AGP, sound, NIC, IDE, and even the video card and WiFi. Of course, I updated the video driver after the installation. Point is, I don't think Win7 will come up empty handed for a P4 system.
"and does win7 ask or give the choice of 32 - 64 at installation."
The package will come with two DVDs--one x86 (32-bit), and one x64. Since you have a P4, you'd obviously use the x86 DVD.
HTPC | Pentium M @ 2.82GHz, 2MB L2) | 4GB | 1.0TB | Radeon HD5750
Blu-Ray | Win 7 Pro | HDMI out to Onkyo TX-SR707 AV receiver