parabolic refelctors for noobs

hi

i have been reading the above post for what seems like a day,

im new to this and would like to improve my home wireless setup.

my 54mps LINKSYS 2.4G router is in my office in the loft, but the signal is
poor at the groundfloor / downstairs in the family room, 11-15mps

i also have a laptop with a wireless pmcica card that will pick up 24mps on
the same groundfloor but its almost directly under the router {all be it 3
floors up}

will one of these home made antennas inprove this

thanks


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