SOPC instantiation of clock signals

I am using the UP's clock signals for DE-series boards.

I am using the signals for VGA output. I am just confused how to instantiate the following signals.

char_buff_sopc_inst : char_buff_sopc

port map(

-- global signal

clk_0 => CLOCK_50,

reset_n => KEY(0),

-- VGA Controller

VGA_BLANK_from_the_video_vga_controller_0 => VGA_BLANK,

VGA_B_from_the_video_vga_controller_0 => VGA_B,

VGA_CLK_from_the_video_vga_controller_0 => VGA_CLK,

VGA_G_from_the_video_vga_controller_0 => VGA_G,

VGA_HS_from_the_video_vga_controller_0 => VGA_HS,

VGA_R_from_the_video_vga_controller_0 => VGA_R,

VGA_SYNC_from_the_video_vga_controller_0 => VGA_SYNC,

VGA_VS_from_the_video_vga_controller_0 => VGA_VS,

clocks_0_VGA_CLK_out => clocks_0_VGA_CLK_out,

clocks_0_sys_clk_out => clocks_0_sys_clk_out,

);

where should I connect these signals?

I would really appreciate the help.

BR

glenn