Microsoft doesnt have unique keys for beta release of Windows 7. Regular users are getting the following (tech net/msdn users are getting different keys)
32bit:
QXV7B-K78W2-QGPR6-9FWH9-KGMM7
6JKV2-QPB8H-RQ893-FW7TM-PBJ73
GG4MQ-MGK72-HVXFW-KHCRF-KW6KY
TQ32R-WFBDM-GFHD2-QGVMH-3P9GC
4HJRK-X6Q28-HWRFY-WDYHJ-K8HDH
64bit:
RFFTV-J6K7W-MHBQJ-XYMMJ-Q8DCH
482XP-6J9WR-4JXT3-VBPP6-FQF4M
JYDV8-H8VXG-74RPT-6BJPB-X42V4
D9RHV-JG8XC-C77H2-3YF6D-RYRJ9
7XRCQ-RPY28-YY9P8-R6HD8-84GH3