a WB affiliate two days later on September 20 and changed its callsign to KHWB (for "Houston's WB"), at which time, it began to identify as "Houston's WB39". However, because the network offered prime time programs only on Sunday and Wednesday evenings at the time (it would gradually evolve into offering a six-night-a-week schedule by September 1999), KHTV continued to fill the 7:00 to 9:00 p.m. time slot with feature films and some first-run syndicated programs on nights when the network did not offer programming. During this period, alongside WB prime time and Kids' WB children's programming, KHTV carried recent and some older off-network sitcoms and drama series, movies on weekends as well as in prime time on weekdays, some first-run syndicated shows, and a blend of animated and live-action syndicated children's shows. The station subsequently dropped on-air references to its over-the-air channel position in September 2003, opting to identify only as "Houston's WB". As a CW affiliate On January 24, 2006, UPN parent company CBS Corporation (which split from Viacom in December 2005) and WB network parent Time Warner (through its Warner Bros. Entertainment division) announced that they would dissolve the two networks to create The CW, a joint network venture that initially featured a mix of original first-run series and programs that originated on The WB and UPN. The network signed a ten-year affiliation agreement with Tribune Broadcasting for 16 of the 19 WB affiliates that the company owned at the time, including KIAH, to serve as charter outlets of the network. Nearly one month after the CW launch announcement, on February 22, 2006, News Corporation subsidiaries Fox Television Stations and Twentieth Television announced the launch of MyNetworkTV, a network created primarily to serve as a network programming option for UPN and WB stations that were left out of The CW's affiliation deals. That service committed all nine UPN-affiliated stations that corporate sister Fox Television Stations owned at the time, including KTXH, to serve as MyNetworkTV's charter affiliates. A few months later, the Federal Communications Commission approved a callsign change from KHWB to KHCW (standing for "Houston's CW"), which became official on April 27, 2006. On September 13, 2006, KHCW changed its on-air branding from "Houston's WB" to "CW 39", restoring the channel number to its branding. KHCW remained a WB affiliate until the network ceased operations on September 17, 2006; the station affiliated with The CW upon