I have two laptops, an older 17" Dell, a new 15.4" Dell, and a Samsung netbook, and none of them ever caused any significant RFI. Your problem is probably cable related. I have had no issues using the cheaper than cheap cables from Monoprice.com.
Pro-2004, 2005, 106, 197, PSR 500. KW R1000, TS-850SAT. JRC NRD-525, Allied SX 190 (2, one works 100%), GP5/SSB,Yaesu FRG-7(2), CC Wireless SDR-4+, HQ-100, Icom R71A, RS 2000629, and a few old CBs.