Line Graph- need to add more data on x-axis without the line

[hramos]

Hello,

I am using MS Excel 2003 still, and in graphing a line chart I need to add three more rows of data without graphing it into the chart. Example below in red:

2010 Sales Goals
1.5M
1M
500k
100k
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Exp. 10k 10k 10k 10k etc...........................................
Act. 5k 3k 0 12k etc..........................................
RR 5k 8k 8k 20k etc.........................................




Is this possible?

Thank you!