99 Boxster Won't Start w/a new battery

[btrain34]

I have a 99 Boxster with the tiptronic transmission that has been parked for about 3 months. Prior to it being parked, it was running fine. I have replaced the battery, verified that the immobilizer isn't the issue, and checked the fuses under the dash. The dash lights up but there is no crank now. Any ideas what else it could be? Is there any way to push start it with the tiptronic? Thanks in advance.

[Viper10000]

Have you tried starting it in neutral instead of park? I don't know if it will work but maybe worth a shot? Other things to think of:

Starter
Ignition switch (maybe try jiggling the key when you start?)
Bad ground somewhere?

[mikefocke]

Simultaneously foot on brake, wiggle steering wheel, wiggle shift lever, wiggle key.

New battery is 12v plus charged?

Worked when parked?

Any signs of rodents?