Toggle bettween 2 appz installs

Hi,

I'm looking for how to toggle between 2 appz install. Here bellow my actual script.

prog[pn]=['Adobe Acrobat Pro 7.0.3']
picf[pn]=['AdobeAcrobat.jpg']
picw[pn]=['91']
pich[pn]=['106']
textl[pn]=['Bottom']
texti[pn]=['0']
desc[pn]=['Adobe Acrobat Pro 7.0.3.0 Advanced way to create, control, and deliver more secure, high-quality Adobe PDF documents.']
	uid[pn]=['AcroPro7']
	excl[pn]=['AcroRead7']
cmd1[pn]=['%cdrom%\\software\\AdobeAcrobat7\\AcroPro.msi /q']
dflt[pn]=['no']
 cat[pn]=['Applications']
ordr[pn]=[230]
pn++

prog[pn]=['Adobe Reader 7.0.2']
picf[pn]=['adobe_reader_7.jpg']
picw[pn]=['99']
pich[pn]=['79']
textl[pn]=['Bottom']
texti[pn]=['0']
desc[pn]=['Adobe Reader 7.0.2.0 RyanVM package Adobe Reader 7.0.1 Switchless Installer (20.4MB).']
	uid[pn]=['AcroRead7']
	excl[pn]=['AcroPro7']
cmd1[pn]=['%cdrom%\\software\\AdobeReader7\\acroread702.exe']
dflt[pn]=['yes']
 cat[pn]=['Applications']
ordr[pn]=[231]
pn++

As it shown, there is an exclusive or between Adobe Acrobat and Adobe Reader install. To select what to install, I have to uncheck one before checking the other.

Is there any how, to do that automatically: the first checked uncheck the second.

I hope i was clear.

Regards

coucou