Ready made JUNOS OS for your laptop. During googling I found the rapidshare link to download ready made JUNOS. Download the given files and follow the steps:-

Here is the running junos 7.4 in Qemu.

download the files extract to one folder. and follow these steps.
1. Install TAP interface buy installing open vpn software.
2. open command prompt and goto the qemu folder
3. run the following commands.
jqemu.exe -L . -m 256 -hda Olive.img -serial telnet::1001,server -localtime -net nic,vlan=1,macaddr=00:aa:00:00:01:01,model=i82559er -net tap,vlan=1,ifname=TAP1

4. Open another command prompt, tellnet to 127.0.0.1 port 1001

Loggin details of Running Junos.
Login id= root
Pass= juniper123

Download link:
Code:
http://rapidshare.com/files/204801146/qemu.part11.rar.html
http://rapidshare.com/files/204793616/qemu.part10.rar.html
http://rapidshare.com/files/204786284/qemu.part09.rar.html
http://rapidshare.com/files/204778149/qemu.part08.rar.html
http://rapidshare.com/files/204770746/qemu.part07.rar.html
http://rapidshare.com/files/204762906/qemu.part06.rar.html
http://rapidshare.com/files/204755972/qemu.part05.rar.html
http://rapidshare.com/files/204749740/qemu.part04.rar.html
http://rapidshare.com/files/204743032/qemu.part03.rar.html
http://rapidshare.com/files/204736026/qemu.part02.rar.html
http://rapidshare.com/files/204728423/qemu.part01.rar.html

Code:
Open VPN
http://rapidshare.com/files/204801980/openvpn-2.0.9-install.exe.html