Virtual Channel memory is exclusively for KT133 boards so your ABIT KT7 will support VC memory. I heard on other boards that VC memory cannot or has no effect using 4-way interleave, a option in the KT7 Bios that would make a pretty big difference in memory performance. Since SDRAM is so cheap now a days and supported in newer KT133A boards, I would just invest in SDRAM.
-Jimbo